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heathland
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| Features from Wildlife magazine |
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Round the reserves
Seasonal stroll
A visit to Goblin Combe takes you from the shady
depths of the yew-lined combe to the sun parched slopes of the limestone
cliffs and gives far-reaching landscape views across the North Somerset
countryside.
This reserve is only accessible on foot and visitors
can enjoy the delights of walking through the wooded valley of the
combe before reaching the boundary of the reserve. Parking is limited
to the small quarry car park on the left of Cleeve Hill Road near
the Goblin Combe Environment Centre (signposted from the A370).
From here walk back down to the road, bearing right and past the
Centre on your left, following the footpath signs that lead you
through a gate and into the combe bottom.
After almost a mile you'll enter the reserve
as you pass through an old stone wall. As you walk along the combe
you'll begin to notice the low scrub that has colonised the
grassland slopes as well as the arching hazel overhanging the path.
Majestic pollarded oaks tower over you, a shadow from a long-forgotten
time when grazing activity kept most of the smaller scrub at bay.
Further along the path the old gnarled yews grow in their own deep
shade and it is here where the mysteriously named moonwort was first
ever recorded. Butterflies such as speckled wood can be found as
well as gatekeepers flitting within the dappled light. It is here
that the uncommon white admiral may be seen
in July.
As the path divides, stay in the valley bottom,
keeping to the route turning off left after 40m. Here the ferns
of the combe are at their best with hart's-tongue and male
ferns covering the greatest area and limestone fern can be found
growing amongst the moss-covered scree. Winding your way up the
footpath, follow the yellow markers on the trees that take you through
an area with a high dormouse population. Eventually you'll
come out onto the grassland where in the summer the site is full
of insect life. Common blue butterflies, along with marbled white
and silver washed fritillaries will be seen across the species-rich
grassland, and in the purple heath areas both woodland and common
green grasshoppers can be heard singing during July and August.
In the shorter areas of turf and bare rock grayling butterflies
may be seen occasionally and stripe-winged and mottled grasshoppers
heard singing quiet hissing song.
Cross the grassland until you reach the entrance
barrier and turning left just before this will take you along the
path at the top of the grassland. This leads you onto the top of
the combe - be careful here as the cliff to the left is very
steep. The views from here take in the western end of the Mendips
northwards across to the coast of South Wales. Ignore the air traffic
from Lulsgate and look for the buzzards that freely orbit in the
thermals over the combe, often joined by ravens, the largest member
of our crow family. In the autumn family groups of crossbills can
often be heard as they fly between the conifer plantations.
From the viewpoint follow the path to the right
which takes you down across another stone wall and for a short period
you are outside the reserve. Follow the path right to the bottom
of the combe, taking care when walking down the steep flight of
steps, and eventually reaching the point where you entered the site.
Turn right at this point and follow the path back towards the Centre
and the car park.
Goblin Combe is privately
owned and part of it is leased to the Trust to manage as a nature
reserve. The Trust is working in partnership through FWAG with Natural
England and SITA to re-establish grazing at this site. We are also
working with Goblin Combe Environment Centre and North Somerset
Council to improve visitor access to this reserve via a series of
paths and upgraded steps that link the whole combe. Improvements
are also planned to the site interpretation which will inform visitors
about the special wildlife value of Goblin Combe.
Reserves update
September
An Indian Summer will keep the flow of migrant insects to our island
at a steady stream. Our own population of migrant hawkers already
on the wing can be increased dramatically with dragonflies coming
in from Europe. At Dolebury Warren or Goblin Combe watch out for
these small but agile hawkers gathering together in large numbers
feeding on smaller insects as they hunt alongside the scrub and
tree edges at these limestone grassland sites. At Weston Moor or
Bathampton Oxbow a lucky observer may be lucky to see one of our
largest predatory insects, the hornet robberfly. These large insects
sit eagle-eyed on top of cowpats in cattle pastures waiting for
passing insects to come within catching range!
October
If the water levels are down at Chew Valley Lake the end of the
passage south of waders may extend into this month. Juvenile birds
along with their parents can be seen feeding on the mudflats of
the lakeshore. Dunlin, ringed plover and even little stints can
be observed feeding alongside flocks of lapwing. Little egrets,
a bird once uncommon in the area can also be seen here and along
the estuary at Blake's Pools or Walborough. Its also at these
coastal sites where the passage of finches, thrushes or larks, often
interspersed with swallows, can be watched as the birds move south
in search of safe feeding grounds and shelter.
November
In Weston Big Wood the last of the season's butterflies may
be seen along the ride. Small tortoiseshell and red admirals can
be seen feeding on the ride-side flowers in warm sun-filled glades.
Dragonflies such as common darters may also be still on the wing
and the song of dark bush crickets will continue to strike out from
deep within patches of bramble. Dippers may well be seen at Willsbridge
Valley feeding along the Siston Brook. Its rapid low-level flight
is broken only when it alights on water soaked rocks as it prepares
to submerge itself in search of food.
December
A good chance to encounter winter thrushes at Folly Farm or Brown's
Folly with flocks of redwing and fieldfare found feeding on holly
and hawthorn berries. Both of these thrushes can be determined by
their flight calls with a loud 'chack-chack' telling
the presence of the fieldfare compared to the high pitched 'seeep'
of the redwing. The latter can also be heard migrating at night,
with their high pitched call calling out to other flying thrushes
as they pass overhead. Around Brandon Hill winter flocks of long-tailed,
blue and great tit will often include coal tits and nuthatch as
they roam around the hill in search of food. Reserves update
Making Hay in the sun
Everybody should be able to experience a hay meadow in full bloom
and if you visit our reserves in June and July the meadows will
be full of wildflowers such as yellow rattle, oxeye daisy, black
knapweed and devil's bit scabious. However these species-rich
meadows only exist because for a long time people have cut them
every year, making hay which they can feed their livestock during
winter. These days some of the smaller meadows don't provide
enough of a crop to make it worth cutting hay as fodder but if they
aren't cut and the standing grass is left then eventually
the habitat will be lost. This is where we recreate the way the
land was managed traditionally. Every year teams of volunteers don
their sun hats, smother themselves in sun lotion and head out with
scythes and rakes in hand to reserves such as Ashton Court Meadow,
Tucking Mill, Weston Moor and Walton Common. This year's heatwave
provided good weather for drying large machine-cut hay crops, but
not so good when you're cutting and raking it up by hand.
Access for All
The big project for the summer has been at Folly Farm, upgrading
the Access for All Trail that winds through Folly Wood. The completed
trail is over 700m long and constructed to the exact specifications
required to meet the national standards of full accessibility for
disabled people. The trail provides a chance to experience both
mature woodland and species-rich grassland. If you're lucky
and visit at the right time you may see a range of bat species,
badgers and even barn owls. The work has been made possible thanks
to the Batscapes Project which was supported by the Heritage Lottery
Fund. Contributions of aggregate came from Tarmac Ltd and of time
and hard work from our Estates Team and volunteers.
Sealing up the bat caves
The old Bath stone mines at Brown's Folly are an extremely
important site for bats. All but one of the British bat species
has been recorded there, including the endangered greater horseshoe
bat. Hibernating greater horseshoe bats survive the winter months
by going into 'torpor', a state where their heartbeat
slows down and less energy is used. Once a day they awake from this
state and emerge from the roost to feed. It is a fine balance, as
they can't greatly increase their body weight like other hibernating
mammals, otherwise they wouldn't be able to fly. This means
that disturbance to bats in torpor is potentially life-threatening
as they awake before it is time to feed, using up their relatively
tiny energy reserves. For this reason access to the mines has always
been strictly controlled. Metal grilles with built-in gates were
installed over the mine entrances, designed to prevent disturbance
by allowing bats to fly in and out but also give people access during
the less sensitive summer months. Unfortunately continued vandalism
and concerns over the safety of the mines has meant that all the
gates have had to be sealed up. We hope that in the future controlled
access can be re-introduced.
Upper Mill Pond Makeover
One of the main attractions at Willsbridge Mill has had a much needed
makeover. Twenty years of constant dipping of the teaching pond
has taken its toll. With at least an estimated half million pairs
of feet treading the dipping platforms and surrounding paths the
whole area was becoming seriously eroded. Generous grant aid from
South Gloucestershire Environment Body and Biffaward has enabled
a complete upgrade which was made possible by the loyal team of
site volunteers. The finishing touches were put in place in August
when we were helped by a volunteer adult scout group visiting from
Swaziland. Thirty five tons of surfacing was wheeled in wheelbarrow
convoy over four days to provide extensive wheelchair accessible
areas.
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