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Nature Notes from Hilltop News
Nature Notes
If you enjoy living or visiting the Chilterns you cannot fail to be impressed
with the variety of landscape, wildlife and the particular weather it offers be
it over the seasons of the year or just on a single day. What's more on any
given day, the countryside in which the hilltop villages nestle is often
characterised by having its own micro-climate compared to the neighbouring towns
and countryside beneath it. This in turn has influenced the composition of local
habitats and the occurrence of wildlife.
No one set of eyes, ears and sense of smell can capture the essence of the
natural history of the hilltop villages. The following nature notes first
published in the Hilltop News are just a simple attempt to reflect on the flora
and fauna we enjoy through the seasons.
These articles were previously published in "Hilltop News".
Chris Brown
January 2004
Nature Notes for Hilltop News December 2005
White Christmas?
The Hilltop Villages lived up to their reputation of providing us a
wet autumn once again, with 71mm - just shy of 3 inches - of rain
during October 28mm of which (1.1 inches) fell in one day, the 24th,
the largest amount since October last year. At the time of writing,
November has continued this trend with already over a couple of inches
in the first two weeks. Meanwhile daily temperatures have held up well
and provided a warm, even at times, balmy October. Once again we
escaped a frost in October and anticipate subzero temperatures not
arriving until the end of November or even December. The trees
reflecting this retain their leaves the oaks and beeches, in
particular, providing a feast of colour this autumn.
Looking ahead, the Met Office is advising that there are strong
indications of a significantly colder but dry winter season especially
in southern Britain. There is no suggestion that we are facing one as
bad as 1947 or 1961/2 but one colder than any winter since
1995/6. Snow fell on Boxing Day last year but the odds have apparently
shortened considerably already on their being a white Christmas this
year.
One of the great unsung heroes of the plant world are lichens. A happy
symbiotic partnership between one or more algae and a fungus. They are
at their most splendid in December and January, with every colour you
can imagine represented. Despite this, sadly they are at best
overlooked and at worst often despised and condemned for encrusting
garden trees and stonework. In severe cases they have been known even
to 'dissolve' granite. In the past lichens were valued for providing
dyes for cloth and even as an antiseptic for wounds, with reports of
them being used during the first world war in the trenches as a
poultice to prevent gangrene. We should celebrate their abundance in
these parts as perhaps the best indication of how clear the air is and
also indicating how old some of our woodland trees are. Many animals
make good use of them from long-tailed tits furnishing their nests to
snails grazing them and mites and other microscopic creatures making
their home within a lichen 'forest'. There are over 1700 species in
the UK and probably only 6 or so botanists who can distinguish between
them. However, help is at hand with an excellent interactive guide for
all ages on the National History Museum website (www.nhm.ac.uk) search
for lichens and follow the links. Try a trip armed with digital camera
to one of the three graveyards in our midst and then compare what you
find with those displayed on fallen logs or encrustations on older
trees.
Owls are very vocal this time of year and due to prolonged periods of
rain or snow become more frequent daytime flyers. We have five native
species more often heard rather than seen. Barn owls which emit
various sounds from a series of eerie screeches, to 'wheezing and
gurgling' can be seen though at dusk hunting for small mammals or
birds and have been spotted several times recently in Hawridge. The
other owls, are the Little 'keew-keew', Long-eared 'oo-oo-oo',
Short-eared, more usually silent and the Tawny 'hooo-hoo-hooo'.
Other birds making their presence known all too well at this time of
year are the Rooks, congregating in large numbers on the bare tops of
trees. Their signature tune, a 'kaah-kaah-kaah' greets the early
morning or evening walker who disturbs their roost with such a
cacophony of sound which seems to increase in volume even long after
you pass by. Meanwhile their larger relatives, the Carrion crow
distinguished by their larger size and seen usually in ones, twos or
threes become frequent visitors to the garden, squabbling over
scraps. Like the Rooks they also descend on fields to feast on
earthworms and insects foolhardy enough to emerge on the bare soil
after rain.
Both these birds figured low-down in the top twenty garden visitors in
the BBC Today programme / RSPB Garden Birdwatch survey last January
when, in one weekend, 6.8 million bird sightings were recorded in 200
thousand, 1 hour observations. The top five nationally though were:-
House sparrow; Starling; Blackbird; Blue tit; Blackbird and
Greenfinch. This year's survey is taking place on the weekend of 28th/
29th January, further details on the BBC and RSPB websites. Compared
to national statisitcs my own ratings each year consistently elevates
the Robin, Dunnock and Collared dove and relegates the Starling and
Greenfinch. Others comments on their own observations would be much
appreciated.
This month star creepy-crawly is the woodlouse. Yet another unassuming
hero squashed underfoot far too often. The primitive land
invertebrates which crawled out of the sea would have looked much like
woodlice which are in fact related to crabs and lobsters. Unlike
insects with three pairs of legs, woodlice have seven pairs. There are
at least 40 species in Britain. Around these parts the Pill bug is
common which can roll into a ball when danger threatens. All woodlice
are recyclers of one kind or another, breaking down organic
matter. They are active all year but prefer the dark and require damp
conditions such as leaf cover or under the compost heap. Young
woodlice replicas of their parents take up to 2 years to grown into
adults.
As always, no doubt, a considerable amount of mistletoe will be again
hung above doorways this Christmas. Strange how comfortable we are
mixing Pagan with Christian rituals. In medieval times mistletoe was
burnt to enhance the fertility of the soil, used as a herbal cure-all
and worn by women who believed it possessed aphrodisiac
qualities. These customs all but died out during puritan times but
were rekindled by the rise in the 17th century of the modern druidic
cults and their dubious associated practices. Charles Dickens in
Pickwick Papers encouraged Victorians to adopt a wholly more
acceptable custom of hanging sprigs around their houses and stealing
no more than a kiss beneath one. The demise of orchards in the country
means that most mistletoe is nowadays imported from France. In
Herefordshire, where it still flourishes on apples, hawthorn and lime
trees, locals now propagate it but as is the case generally most
occurrences are still down to the unconscious endeavours of the
eponymous Mistle-thrush and other birds, which having fed on the
berries uses rough bark to scrape the surplus gelatinous glue stuck to
its beak and in so doing deposits the seed in a crevice.
Finally, I promised last time some suggestions of some more books for
Christmas. David Attenborough is in his 50th year of broadcasting. His
latest book to accompany the TV programme 'Life in the Undergrowth' is
in the shops now. For those interested in Birds a treasure-trove of
information and folklore is to be found in Birds Britannica by Mark
Cocker and Rickard Mabey. That's all for this time. Looking forward
to comments, questions and observations as always.
chrisbrown@rayshill.com
Nature Notes for Hilltop News October-November 2005
The Good, the Bad and the Ugly
What is it about the month of August? Far from being the height of
summer it seems to be the month when rain also falls freely. Last year
August was rain-soaked month, the wettest for the whole year, when
over 6 inches fell. This time it provided a more modest but still
surprising 2.5 inches of rain. September started with balmy days and
warm nights but by mid-month the mood changed with heavy bursts of
rain fall. Despite this we still managed enough dry and sunny days in
both months to ensure victory over the Aussies and so for reasons not
entirely unconnected to the weather it will go done in our memories as
a glorious summer! Looking ahead to October and November we can expect
more unsettled weather than usual for the time of year, with bursts of
heavy rain and strong winds at times. Despite this temperatures will
be upon averages for this time of year. Our well finally ran dry in
September indicating the water table has fallen below 120ft. As I
mentioned last time this confirms with the wind we expect this month
and next some casualties can be expected amongst the trees in the area
which are already under some stress. Better check that your insurance
cover is up to date!
I think its fair to say that on balance most people don't have a
particular affection for our native invertebrate animals such as
insects, spiders, centipedes, woodlice, worms, slugs and the like.
The term 'creepy-crawlies' which I grew up reinforces this general
distaste. Not that I am in favour of the modern equivalent of
'mini-beast' which does nothing to reassure the squeamish. So
borrowing from the film world, I suggest 'The Good, The Bad and The
Ugly' which might at least generate a cult following. For me as a
youngster discovering a hitherto unknown (to me) bug or the like had
the effect of stimulating insatiable curiosity whilst at the same time
it drove my mother up the wall when my latest prize find escaped from
the jar or matchbox to be discovered exploring the living room ceiling
or carpet or settee! It's not surprising why for most of us humans
the reaction on sighting one of these creatures is only marginally
less disturbing than finding yourself in close proximity to a
politician or perhaps renegade from Big Brother. Unfortunately for the
creepy crawly their appearance more often can be remedied by the
rolled-up newspaper or purposely placed shoe. (Shame I hear you say
that my other examples cannot be dispatched in similar fashion).
Whilst television documentaries by David Attenborough have helped
improve the appreciation and wonder of the life and times of such
wildlife its fair to say that but for one or two exceptions, few have
broken through to achieve celebrity status. I suspect even for insects
welcomed into our gardens under the heading of 'beneficial' such as
ladybirds and butterflies their larva which are a slimy looking maggot
or ravenous caterpillar respectively are more than often mistaken for
just another pest and receive summary execution. So starting with
this Autumn report I will be including a reference to an invertebrate
which I think should be viewed in a different light. Its my attempt
at a Max Clifford style image makeover and hopefully a few of the
younger and not so younger generation reading HTN might develop an
interest in this mistakenly denigrated and underrated group of
animals. Clint Eastwood may have been 'The Good' but he was also to me
at least always 'The Ugly'.
My choice deserving a second look is the Harvestman which can still
be found this time of the year in hedgerows. Its more likely thought
that you have found one in your kitchen or bathroom or lurking under
the windowsill. They're long-living with a lifespan of up to 9
months. One of their alternative names, 'bunspider' most accurately
describes their appearance as although they are related to spiders
they have a distinctive sphere-shaped body suspended on long spindly
legs which could have provided the inspiration for the Martian
invaders in HG Well's 'War of the Worlds'. Their lifestyle is very
different from spiders too. I guess you would say that they like to
'live on the edge' compared to the cautious spider, with a eclectic
diet to match, including a particular craving for bird droppings
(yummy!). When attacked, they think nothing of shedding a leg or two
to escape. Even when detached from the body the leg continues to jump
and flick about. This distracts the predator while the harvestman
makes its escape. They are able to shed up to four legs in this way,
(presumably evenly distributed) and they need to retain at least one
of their sensory legs to survive, presumably so they can sniff out
their next meal casually left by a generous bird!
Talking of birds, October and early November will provide the last
chance for birds to stock up on their fatty food reserves for the long
hard winter. As hedgerows and trees shed their leaves they once again
appear more abundant, having hidden during the summer whilst they
complete the moult and development of winter plumage. Look out for
mixed flocks of small birds feasting on the fruits and berries.
Compared to last year when there was a bountiful supply of such food
the hedgerows are not so heavily laden which means birds such as
goldfinches, blackbirds as well as winter visitors such as redwings
will chance a foray into our gardens. Providing a varied mixture of
seeds ( including those left after shrubs and plants have flowered),
nuts and fruit such as overripe apples, will ensure you encourage a
bit of autumn colour into the 'backyard'. A chance conversation with
two other local birdwatchers the other week confirmed I may not have
been mistaken in seeing some waxwings last winter. These are
infrequent visitors from the sub-artic region on Finland and in some
years, known as 'waxwing winters', can arrive in large numbers. They
have a penchant for rowan and hawthorn berries, both common around
here so look out for their fawn/rust coloured plumage with a crest,
red wing tips and tail tipped with bright yellow like a paint brush.
NB not to be mistaken for Jays common all year round residents, which
are similar in size but have pink and blue plumage.
Bracken tends not to get to good press these days -in cowboy film
shorthand, aka 'The Bad'. Although appreciated for adding to Autumn
colour which is at its best in November, turning yellow and then brown
after the first frosts have got to it. As I said it has a bad
reputation and I hear frequently about the ongoing battle by those who
look after the Commons to contain the spread of bracken which if left
to its own devices would stifle and drive out less dominant heathland
flora which is a rarity in the Chilterns. These days it is viewed more
as villain than hero. But deserves it place as part of the local
ecology of the Commons given the economic importance it once had for
local people. Until the early part of the 20th century it was a highly
valuable commodity in these parts and would have been protected by
those with commoners who held rights enabling it to be cut and sold
on. Why? Well because it was the bubble-rap of its time. Essential as
a packaging material in ensuring fruit, which in these parts would
have included apples and cherries, could be transported to market
undamaged. Used as a manure, bedding for animals, covering potato beds
or stuffed up the chimney and set alight to clear it of soot! We may
have to resort to this ourselves given the difficulty in getting the
chimney sweep to do our chimney this year!
As the Christmas cards will be in Woolworth's this month I think it
appropriate to mention a couple of ideas for children's books. First
for younger children, 'Where Does The Rubbish Go' published by Usborne
Books and for older children, 'Changing Climate' published by
Earthwatch. A couple of books for the slightly more grown up in
December. That's all for this time. Please keep sending your comments
and questions.
chris.brown@rayshill.com tel:-
758890.
Nature Notes for Hilltop News August 2005
Sunny Spells, Summer Smells
"The air came laden with the fragrance it caught upon its way, and the
bees, upborne upon its scented breath, hummed forth their drowsy
satisfaction as they floated by". - Charles Dickens
We have to go back to 1976 to find average temperatures for June /
July that were higher than this year and the last seven months have
also seen less rain than every similar period since 1976. If the
weather in these two months was an indication of what to expect over
August and September we would be looking forward to another summer
like '76. But despite temperatures in the thirties during July we can
look forward to periods of cooler, but dryer weather in August. When
we do get rain it will be in short but heavy downpours, the ones that
produce that distinctive smell difficult to describe and unlike any
other smell I know. The lack of ground water will take its toll. As
trees give up the struggle and shed their leaves sooner than we have
come to expect in recent years. it will bring an autumnal feel to
September. Sadly I think for some trees, more often than not the
younger ones, the falling water table will be too much for them and
they will become casualties of the first storm or even a strong gust
of wind in September. Meanwhile older trees such as horse chestnut
survive by shedding a bough or two so take care and look out for
fallen branches when driving on the lanes around here especially after
hours.
By the way from this month you can check out the local weather live in
the Hilltop Villages by visiting www.cholesbury.com and following the
weather link. I hope you find it useful.
Last time I mentioned that one animal to look out for in your garden
was the hedgehog. Since writing this, the Mammal Society has reported
on its mammal population survey (undertaken by counting of road
kills!) there has been a dramatic fall in hedgehog numbers in recent
years. The main causes - that is apart from highway fatalities - are
thought to be the obsession of tidying up gardens, replacing grass
with decking and applying copious quantities of chemicals and in
particular, slug pellets. The average hedgehog with its expert sense
of smell, can sniff out and consume half a pound of slugs, snails etc
per night. So instead of toxic slug pellets why not try protecting the
hostas and other delicate plants with some bran scattered around them
(as recommended by Monty Don on Gardeners World recently) and provide
a pile of logs and leaves in an unkempt corner of the garden. Reports
of sightings of hedgehogs or even their ink black 'signatures' on the
lawn would be welcomed.
The lack or rain has had one small advantage though. It has restricted
the growth of grass in our lawn and has given a chance for a whole
variety of floral opportunists to make it their home. At last count we
had 17 different flowering plants many of which are in full bloom. The
perfume from summer flowers, in this case margaret daisies, yellow
toadflax and self heal has to be profuse to compete with all the other
aromas around at this time of year in order to attract the prime
pollinators - bees - of which there over 250 species in Britain. Bees
can hone in on the perfume of newly emergent flowers several
kilometres away although the average garden will also have at least on
small underground colony of bees.
A mild winter suggests the summer butterflies might be more numerous
this year so August should be a good month to spot a few of the ones
perhaps less familiar to you, such as the small or large skippers
(deep orange/ochre) that scurry low down but at great speed from
flower to flower like a miniature Harrier jump-jet. In contrast, the
marbled whites (mottled brown/white) and a feature of this part of the
Chilterns, have a chaotic meandering flight often retracing their
steps again and again. They used to be known as the half-mourner a
reference to fashion in Victorian times of wearing black and white as
a mark of respect for the not so recently departed.
For a walk out and about this month choose a route with mature
hedgerows. During August hedgerows are full of life. The hedge with
its ripening fruits (berries) and seeds provides a vital larder ahead
of a harsh winter for the smaller birds ( see below) as well as bank
voles, harvest and wood mice. Dragonflies often patrol hedges in
search of prey while speckled wood butterflies can be seen tangling
with each other as they vigorously defend their territories from their
neighbours. Whereas along with some patience, a keen ear or eye is
what is needed with the foregoing even with a blocked nose its almost
impossible to ignore the scent of the Stinkhorn (Phallus impudicus) a
fungi which can frequently be located by its musty smell within the
undergrowth of hedges in both August and September. Although somewhat
malodorous to the human, the stinkhorn's stench is irresistible to
blow-flies which mistake it for carrion but it is so pungent it should
enable you to locate its source and which will give me an excuse to
omit an indelicate description embarrassing the fainthearted and
probably giving the Editor palpitations.
If you watch the birds in your garden regularly you could not have
failed to notice that the number visiting has fallen suddenly over the
past month. Although you might suspect a visiting cat (one without a
bell) such as the ones I referred to last time this disappearing act
is not unusual at this time of year. The majority of younger birds
have joined up in unofficial flocks comprising a variety of species,
(e.g. tits, nuthatches and the like) and are hanging out in nearby
hedgerows and woodland. Similarly older birds have also adopted a
survival strategy at a time when they undergo a summer moulting and
can be vulnerable to attack from not just cats but sparrow hawks which
are more active at this time than any other. Not all birds are
undercover. Swifts and swallows will be seen and heard above stocking
up on the bounty of airborne insects until late August and mid
September respectively when they depart for sub-Saharan Africa. Two of
our more colourful birds, goldfinches and yellowhammers are more
frequent visitors to our gardens these days. Until recently both birds
have been in decline, but are beginning to make a comeback in this
area with more sympathetic management of hedges and field
margins. Both can be encouraged into gardens by providing wild
birdseed and in the case of goldfinches allowing seed-heads such as
thistle or teasel to remain until the seed heads develop.
This month's house visitor is the black garden ant, the only native
ant which regularly invades our houses. The kitchen or larder is their
usual Mecca. They have a remarkable ability to detect by 'smell' or
more correctly sense the chemical odours given of by any sugary
substance vital for fattening up the young larvae. Often the first
sign you have been invaded though is the emergence of the virgin
queens in late August. As this swarming often coincides with the
arrival of a thunderstorm, there is a belief in folklore that they are
supposed to be able to foretell such weather. I think they are a damn
sight better at it than I anyway!
As usual please do get in touch with any news or questions or let me
know what else you would like to see on the weather page.
chrisbrown@rayshill.com 758890
Nature Notes for Hilltop News June 2005
Bum barrels, bells and whistles
The weather in April and May has meant a cooler and dryer Spring than
usual. Daytime temperatures were on average lower than in the past two
years. Meanwhile despite the heavy downpours in Mid May neither month
managed to contribute more than around three-quarters as much rainfall
(about 4ins) compared to Spring last year. With only 10ins of rain
over the past 6 months its no surprise that our well has only 6 foot
of water. Compared to 14 feet last year so the water table is
desperately low with no chance or recovery until next winter.
Looking ahead neither weather lore nor meteorology are optimistic when
it comes to rainfall either. With the oak out before the ash this year
the trees are predicting 'a splash' rather than 'a soak' and some
long-range forecasters are suggesting we will be in for a scorcher
this summer it looks like being a tougher season with uncertain
results for farmers and gardeners alike. Its time to take action to
avoid your lawn turning into the prairie lands of Illinois. Raise the
blades on your mower and maybe leave the cuttings to act as a mulch to
conserve moisture. Order a rain barrel or two from the water companies
who have them on offer. We are getting close to having acquired almost
as many barrels as George Galloway (allegedly!) And don't forget the
wildlife. The lack of 'casual water' around as golfers call it
presents a problem to birds and other animals so leave a bowl or two
for them too.
For astronomers and for insomniacs in search of a bit of night-time
walking the Full Moon falls on June 22nd and July 21st.
First some good news! The Brown's have several new additions to the
family! Well to be honest the long-tailed tits I mentioned last time
who took up residence in the nearby hawthorn hedge have a large brood
of chicks and have been working from dawn to dusk to provide a steady
stream of caterpillars and the like. Obsessed with finding out more
about this bird I have discovered that it is not related to the other
tits we are familiar with. The powers that be in the bird world are
looking to correct this anomaly and are deciding on a new name. More
precisely they are trying to choose which of the many traditional
regional old English names to use. The trouble is they have a good few
to choose from including: long-tailed chittering; poke pudding; hedge
jug; mumruffin and last but not least my favourite bum barrel!
So what's about over the next two months? June is one of the best
months for the larger insects with the second broods of peacock and
small tortoiseshell butterflies emerging, marbled whites in the
meadows and red admirals arriving from the continent. Just time to
invest in one or two flowering shrubs with butterfly appeal to your
garden. If butterflies represent the light aircraft of the natural
world the hoverflies are the helicopters removing those unwanted
garden pests and meanwhile the 'jumbos' must be the dragonflies which
patrol the hedgerows and pond edges in search of insect prey. Many of
the larger species are migrants from southern France. Cleaner
waterways and lakes and warmer winters are improving the conditions
for these larger varieties resulting in more sightings year on year.
We tend to think that autumn is the only time to see fungi but a
chance meeting with fellow HN contributor and 'mycological gourmond',
Clive Carey put me right. Despite the warmer and drier conditions
there are plenty of every-day and more exotic fungi to be seen both in
woodland and the commons at this time of year. Of all species I think
fungi have some of the most imaginative and descriptive of names. Just
as well. There's no mistaking what might happen if you choose to take
a bite from a death cap, satanic boletus or the destroying angel.
Clive reeled off a long list of the safely edible ones. Personally
without such expert supervision I think I will stick to looking rather
than eating and have always been a fan of those large bracket fungi
that which often look as old as the tree they are on and put on a
spurt of activity with new growth in fresh shades of purples, yellows
and greens at around this time. So for this month's outing try the
woodland and commons and see how many different species you
encounter. But take advice from the likes of Clive and co before
indulging or it may be the last walk in the woods you take.
From the end of May and into June it is the mating season for
hedgehogs. So if you hear grunting and snorting during the evening
coming from the undergrowth or a hedgerow this may be the
reason. Unsurprisingly it can be a somewhat noisy and prolonged affair
lasting several hours. The amorous male has to perform a nifty dance
as he encircles his mate to encourage the reluctant female to flatten
her spines. ( I am tempted to add a comment at this point but the
Editor would no doubt censor it!)
We tend to associate owls with the night-time. Hearing an owl hoot
during the day is unusual but especially at this time of year tawny
owls are out and about almost as much during the daylight as at
night. Their nest of owlets become increasingly ravenous and at least
one if not both adults will be out after their prey typically
fledgling birds and the young of small rodents both being as yet
unfamiliar with the hazards their parents have had to learn about to
survive.
Along with magpies and other members of the crow family perhaps the
other major predator of garden birds is the domestic cat. In rural
areas a typical two year old cat, allowed the freedom to roam, will
kill on average 18 birds per year. Mainly our familiar garden visitors
although some have even leant how to pounce on swallows swooping over
ponds. Their diets are also enriched by around 5 mice 2 voles, 2
harvest mice, 2 rabbits and one shrew plus a smattering or frogs,
toads newts, lizards and even grass snakes. Cats don't kill that many
rats apparently, - only one between every four cats). Cats wearing a
bell kill less birds but more mice than those without a bell so it
might be worth a small investment next time you pass the pet shop.
The warmer evenings bring our first sight of bats. One of our most
widespread examples of bat is the Pipistrelle. Recent studies with bat
detecting devices that pick up the sonar the bat uses to catch insects
has discovered that there is in fact a new species using a distinctly
higher frequency (the bat equivalent of whistling to its pals which
has consequently been nicknamed the 'soprano pipistrelle'.
Just space to mention the house guest for this month. Probably one of
the most intimidating and least endearing of all fellow inhabitants,
the Devil's Coach Horse. These are the large black elongated
armour-plated beetles that emerge without warning and scurry across
the carpet or along the skirting. In fact they do you a favour by
feasting on many of the other unwelcome insect house guests. Despite
this as they look like a creation out of the 'Hammer House of Horrors'
its hard to feel any great affection for them, I'm afraid. As always
do get in touch with any observations. chrisbrown@rayshill.com
Nature Notes for Hilltop News April 2005
Now Appearing In The Countryside Near You
The weather at the end of February and March sprung some surprises with a
dozen or so consecutive days when snow fell. Rainfall for the first three months
of 2005 was down on the average for the time of year and was only half of last
year's unusually wet quarter when 6.5 ins (169mm) of rain fell. Looking ahead
the last throws of winter at the end of March will not unsurprisingly give way
to more showery outbursts in the early part of April with temperatures slightly
above the norm for this time of year. May looks like being warmer overall and
drier than average, however the downside of this is that clearer skies will
bring night-time temperatures below freezing, with sheltered areas in the
Chilterns experiencing snap frosts during the first week of the month. The next
two full moons are on the 24th April and 23rd May.
So what can you expect to see out and about for the next month or two?
The cold snap at the end of February has delayed bud burst for a week or
two. As I write I am yet to spot a brimstone butterfly, usually one of the first
to break cover and brave the elements in March. As often is the case the first
sight of butterflies emerging from hibernation may have more to do with them
being disturbed than of any meteorological significance. A far better indicator
of climate change is the orange-tip (white wings with an orange tip!) which if
not seen already should make an appearance in the next few weeks. It is an
important 'indicator species' and is now appearing weeks earlier compared to 30
years ago. It has become more common in those parts of the Chilterns which have
been seen improved conservation and more sympathetic land management. Meanwhile
sightings in low-lying areas have fallen due to more extensive drainage and
'tidying up' of its traditional habitats. For this reason its all the more
crucial that our gardens, paddocks and hedgerows which developed from the
enclosure of fields as well as important habitats such as roadside verges,
greens and commons retain sufficient unkempt areas. We should resist the
suburban obsession to make open spaces neat and tidy and turn them into sterile
parkland with reconstructed vistas of an imaginary and false countryside. Its
ironic that at a time when agricultural policy is now, at long last, recognising
the contribution farmers make through the sensible management and conservation
of the rural landscape, it is fashionable to turn gardens into unnecessarily
floodlit, so-called 'living spaces' from which everything natural is either
discouraged or has been extinguished.
Cuckoo-pint no doubt one of those 'nasty weeds' not welcome in such gardens
seems to appear fully grown in just a day or two regular as clockwork in April.
The characteristic hooded leaf or spathe protects the cylindrical flowerhead or
spadix. Look out for whether the flowerhead is either yellow or purple or if the
green leaves are plain or spotted. All variations occur locally and the spotted
version is said to have given rise to the alternative name of Lords and Ladies
due to its 'resemblance' to the beauty spots that adorned the fops and
courtesans of 300 years ago.
Although about all year, from late March onwards brown hares are more
visible than usual. Mornings and evenings are the best time to see them although
the excessive amounts of energy they possess during spring means they abandon
reason as they play out their annual rituals of boxing and 'haring' about open
grassland. Perhaps this year the exuberance of their celebrations will have all
the more meaning given the extra protection they along with foxes and deer have
in the law from this year!
Another sight often seen scurrying at full tilt across the road is the
stoat which by late May is also more active than any other time. Both parents
are preoccupied with hunting out prey, ranging over a territory of over 20
acres. Usually mice or young rabbits and on the estates around here, to the
gamekeepers displeasure, pheasant eggs no doubt, to feed their offspring or
'kits'. Closely related to the weasel but distinguished by their deeper
reddish-brown colouring and with tail held out horizontally and tipped in black
as though it had been used as a paint brush.
Glancing out of the window as I write this in mid March, with mounting fear
of the imminent arrival of the always polite but direct email from the editor
asking where this month's contribution is, I have spotted a pair of long-tailed
tits nest-making in the recently pruned hawthorn hedge. The nest started as a
small cup of moss in the crotch of tangled and thorny branches. A quick swot
with the reference books advises this is all glued together by confiscated
spider's web. The foundation built, they then begin to weave more moss with
grass stalks and an outer crust of lichen. By the time this article hits the
streets and assuming unwelcome magpies or our cheerful postman have not
inadvertently interrupted their work we should have sight of a dome-shaped and
fully enclosed nest lined with over two thousand feathers. For this reason their
old rural name is 'bottle-tit'. Apparently the nest being elastic can be home to
a brood of 10 to 12 and surprisingly up to four adult birds, two of which having
lost their own nest to predation join the family as house-guests and will help
with rearing the chicks.
If you find yourself walking across the open ground listen out above for
skylarks. One of my regular correspondents has already reported a flurry of
skylark activity so maybe this will be a good year for them! Birds provide an
excellent starting point for youngsters to enjoy nature. They are readily
visible and can be easily identified from their sounds and plumage. Having heard
from one dad and son who have started compiling a list of local bird sightings I
would be happy to pass on a list of local birds based on our combined local
knowledge to anyone else interested.
Choice of uninvited house visitor of the month must be the Cockchafer (May
Bug) which noisily announces its arrival on warm evenings in May as it clumsily
collides with windows and outside lights. Many of these are actually migrants
from the Continent swelling the numbers significantly in some years. Although it
hatches out in October the adult stays underground until the Spring. Eggs are
laid some two feet underground and the large cream-coloured larva remains
beneath the surface for up to three years feeding on the roots of roses and
cereal crops and can be a serious pest. They are known also as rookworms
providing a nutritious meal for such birds when unearthed during ploughing.
Elsewhere you will read about the threats to our native bluebell.
Surprisingly though such illicit trade is not just a modern phenomenon.
Bookbinders from Elizabethan times used a 'gum' made from the bulbs whilst long
before the discovery of starch's stiffening qualities bluebell glue was used by
courtiers to revitalise their ruffs. In the seventieth century the famous
herbalist John Gerard advised that "the root is bulbous full of slimie glewish
juice, which will serve to set feathers on arrows." So finally, I make no excuse
for again this year recommending a morning or early evening visit to see this
shimmering burst of woodland colour, made all the more spectacular by the lime
green of the newly emerging beech leaves overhead.
Do keep the questions and comments coming in as its good to hear from
others what they have seen 'appearing in the countryside near them!'
chrisbrown@rayshill.com tel: - 758890
Nature Notes for Hilltop News February 2005
The Birds and the Bees!
Well OK it was not quite a "White Christmas" in the Chiltern Hills
this year as I had predicted but it was a near run thing and the hard
frosts around Christmas Eve provided a festive picture for early
risers!
As has become the custom this time of the year I will start with a
summary of the meteorological extremes of the previous 12 months.
Coldest day in 2004, March 2nd at -6.9°C (for 2003 -8.5°C).
Warmest days were on June 8th and August 7th, both a modest
30.6°C compared to the 36.3°C in August 2003. Last year we
had 29.5" of rain which is slightly above the average. Wettest day
October 14th at 29mm (1.25") and wettest month incredibly was August
with 142mm (5.75"). If you are looking for anecdotal evidence of our
changing climate last year did not disappoint. Despite August
temperatures failing to top those in 2003, last year was still the
fifth warmest year since records began. The warmest 10 years have
all been since 1990.
Looking ahead for February and March,
overall temperatures will be as low as -6° and as high as
19°C. In contrast to a mild, if grey-skied January, these
fluctuating temperatures will be the product of some particularly
icy-cold and windswept days as February moves into March. Look out
for an excessive use of the phrase "wind chill factor" by the
weathermen! February will see plenty of drizzle whilst March will be
noted for some very heavy downpours.
The mild winter so far
has given a kick-start to the wildlife, with all sorts of signs of
new life around us such as the first flowering of hazel, primroses,
rooks nesting and thrushes singing. Snowdrops (the wild varieties
that is) traditionally flowered around Candlemas Day (2nd Feb) but
their white flowers have been progressively emerging earlier over the
past 10 years. The tips of their spear-like leaves are reinforced
with armour-plate to enable them to shear through frozen soil.
Frogspawn has already been reported in Cornwall, as I write this in
early January, so I would be interested to hear of anyone with a pond
full of amorous amphibians emerging from hibernation followed by
dollops of the jelly during February. The jury is still out as to
whether this early spawning is very successful with these early
tadpoles often failing to make it through to the "froglet" stage,
compared to later broods, due to lack of food-supply (pond algae and
plant life). But gradually there may be a shift in favour of these
amphibian pioneers.
By the time February arrives the
bird-breeding season will have started. The trigger for the hormones
to start pumping around their bodies was the change in day-length at
the turn of the year. Birds are unique in growing and "shrinking"
with the seasons. In the autumn their metabolism switches to creating
fat reserves. Whilst at this time of year its all about looking the
part to attract a mate. Size matters in the bird world as does having
the right gear. Despite all that is written about the habits of
birds, comparatively little is properly understood about how they
seek out members of the opposite sex. Mind you perhaps the same can
be said of we humans! The phenomenon of speed-dating, which the urban
unattached and desperate "twenty-somethings" spend their evenings
doing these days - I am reliably informed - is suspected as being how
some bachelor birds select their partner for the season. How many
they "go steady with" no one has a clue, although the female dunnock
(the erstwhile hedge sparrow) is the champion "swinger" of the garden
scene keeping a harem of males.
On warmer days in late
February bumble bees can bee seen on the wing. These are all females
who have hibernated. The males having died after a frantic period of
mating which takes place in the Autumn. These males are said to go
out on mating patrols. Successive generations of bee visiting the
same favoured sites in search of females. The females will have
taken advantage of late flowering plants such as ivy to produce
sufficient sugar reserves. On emerging from overwintering they are
very active, searching out - and pollen-rich flowers already in
bloom. This ready-made energy supply will fuel them in their efforts
to search out a suitable nest site, usually in the soil, often an old
mouse hole to build their honeycomb nest. Only when they have found
sufficient pollen will they be stimulated to lay their eggs.
A test of your powers of observation now when you are out on a
walk. Trees in winter can be tough to recognise if one normally
relies on the leaves. Some can be identified with greater ease, such
as the sticky-buds and flaky bark of horse chestnut. For ash look
out for black buds and dark bark which on older trees becomes
disfigured. Beech has light grey smooth bark and thin pointed
reddish-brown buds and usually retains the dead leaves from last
season. Oak has distinctive furrowed bark and its buds are clustered
around the tip of the twig. Lastly sycamore has distinctive green
buds. I have left off the previously mentioned hazel as by the time
you read this those yellow catkins or "lamb's tails" will be dangling
about in reckless gay abandon no doubt.
Apart from bats, hedgehogs and dormice (including our resident
glis glis), no other mammals in the UK actually hibernate. In fact
the smaller the animal the more frenetic they are in winter as the
need to obtain energy to
offset losing body heat often means they remain active most of the
day as well as the night time. To prove this point the bear (no
there have not been any sightings around here) is known to hibernate
for up to six months of the year. Mice and voles will burrow under
the snow where it is that bit warmer and continue to seek seeds,
insects and other small animals in the surface litter. Being
creatures of habit they take the same route each day so if you peer
into the ground inside a hedge you can see these tracks created by
the patter of little feet travelling back and forth as they search
out a juicy earthworm.
An unlikely fellow gastronome when
it comes to worms at this time of year is the buzzard, which can be
seen and heard (mew-mew) overhead, although this scouting is more
likely to be for rabbits than any invertebrate! Whilst on the
subject of worms and specifically the answer to the question: which
is the early bird that catches the worm? The answer is the
blackbird, 13 minutes ahead of the robin, at least according to the
recent "Early Bird" survey carried out at the winter solstice by
British Trust for Ornithology and Radio 4's Today programme.
Concluding with the theme of "whose house is it anyway?" started
a couple of articles back, February and March sees the emergence of
overwintering butterflies such as small tortoiseshells and
brimstones. The chances are in the next few weeks you will be
spooked by a battered peacock butterfly that has been clinging to the
curtains in the spare bedroom, it is flapping its wings in the vein
hope that the "eyes" will scare off a would be predator. Next year we
are trying out a butterfly hibernating box which Santa brought me
this year. It comes complete with aromatherapy treatment to tune the
senses. Whether it turns out that we end up with a tribe of super
fit, oversexed butterflies chasing each other about having had a
workout at the insect equivalent of Champneys we will have to see.
As always keep sending me your reports and questions.
chrisbrown@rayshill.com 758890
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