Beech Droves and Gnarled Oaks

I’ve developed a bit of a thing for the Quantock Hills… ever since visiting for the first time last year, I’ve taken every opportunity I can to explore this ancient landscape – usually this means a very early start on a survey in the south-west to factor in some free time when I get there!

One of my favourite places is the Drove Road which is a prehistoric track running across the higher ground, presumed to be an ancient trading route which avoided the wetter lowlands. At one end is the Triscombe Stone accompanied by an information board which has the following to say:

‘[the drove road] is also on a ‘Harepath’ (a Saxon army route) recorded in the 14th century as the “Alferode”. In the year 878 King Alfred may have been familiar with the route during his stay nearby at Athelny, on the Somerset Levels.’

The track is lined with ancient beeches which have been coppiced – their boles much older than their branches – but they encompass the road as though the two have always been together, the arches echoing the holloway which runs beneath.

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If you continue beyond the Drove Road, leaving Crowcombe behind and taking a left along the winding lane towards Nether Stowey, you pass through stunning oak woodland. The gnarled contorted oaks are much older than you might guess from their dwarf stature – the exposed aspect and low nutrients of their habitat slows growth and the result is an eerie, exhilarating woodland – made all the more spectacular by the mist which eddied through the trunks on my last visit.

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This is an ancient landscape, one which is far from intact yet which retains remnants and features which have been lost in much of our modern countryside. The sessile oaks which twist and spiral were coppied for centuries for use for charcoal and in tanning leather. This practise of cutting to the base stimulated fresh growth and allowed the trees to be sustainably harvested by generation after generation – a far cry from the clearfell destruction which you can see at work in the Forestry Commission plantations which have appropriated parts of the nearby Great Wood.

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The ongoing ecological value of these woodlands is incredible – I know from experience that the trees beside the road are packed with bats – and the continuity and history make it culturally important. But you need know little of either to be awed by the impression of entering these spaces. The photograph below is perhaps my favorite – it taps into something primeval which is captured in some of the best literature and still to be appreciated in light and bark and leaf. This is the kind of lane which brings to mind Tolkien’s words:

“It’s a dangerous business, Frodo, going out your door. You step onto the road, and if you don’t keep your feet, there’s no knowing where you might be swept off to.”

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Bats hang in the belfry… right?

We were carrying out a building inspection earlier this week, looking into nooks and crannies to see if we could find bats, or evidence of their presence. To reach these features safely, a cherry-picker was hired to lift us into place. The operator was very friendly and interested in what we were doing. When I asked him to take me up to a crevice above a window, he said;

‘You’ll never get a bat in there’

‘You will…’

‘No way… how small are they? I thought they hung up in the rafters?’

The ‘hanging bat’ stereotype is very widespread but really not true of many of bat species in this country. The two horseshoe species will always be found hanging upside-down in the classic pose and some other species will also hang upside down, including the brown long-eared and some of the myotis species. However a number of UK species, including the common pipistrelle – the species you are most likely to see flying in gardens – prefer to roost in crevices where they wedge themselves in quite tightly. Other species falling into the ‘crevice dwelling’ category include the other two pipistrelle species – soprano and Nathusius – the Daubenton’s bat, the larger noctule, serotine and Leisler’s bats, and the rarer woodland dwelling barbastelle bat.

The common pipistrelle bat is often found roosting in crevice-type features in houses, such as beneath lifted hanging tiles or roof tiles, in gaps around windows, in gaps in brickwork or underneath lifted flashing. The gaps they can squeeze into are really very small – 2cm is quite enough for them to get inside.

Last week I was lucky enough to spend a few days climbing trees and inspecting potential roosting features up in Cumbria where we found a common pipistrelle bat roosting in a hollow in a tree limb over a stream. The video quality isn’t fantastic because it is filmed using an endoscope – this invaluable piece of kit is a camera and light mounted on a long flexible ‘snake’ attached to a hand-held screen which you can feed carefully into potential roosting features and look for the bats in places you could never otherwise inspect. Although the quality isn’t great, I think this clip gives a nice insight into the kind of places these bats will choose to roost.

For many more video clips of bats roosting in trees, I would recommend you to check out the Bat Tree Habitat Key page on Facebook.