Saturday, 5 May 2012

Sand Martin Colony at Bishopstone

Walking along the stretch of coast between Reculver and Herne Bay can feel like stepping into another world when you're used to the white chalk cliffs that otherwise dominate the East Kent coastline. Here, the cliffs are comprised of soft clay and sandstone, which leaves them very vulnerable to erosion - but also makes them the perfect habitat for Sand Martins to build their summer breeding homes.

Sand Martin Colony

The Collins Guide rather wonderfully describes the Sand Martin's call (an audio clip of which can be heard on the RSPB page) as "a dry voiceless rasp as from coarse sandpaper" - which seems appropriate when you consider their building material of choice. Although the Bishopstone colony is easy enough to locate, the birds themselves are not so easy to photograph as they fly in and out of their nest-holes like winged bullets. During a visit last week I witnessed the results of a mid-air collision as two semi-dazed Sand Martins slid halfway down the cliff before regaining their senses and immediately rejoining the others. Fortunately, such incidents are rare, and sometimes a lull in the action presents a photo opportunity:

Sand Martin

Otherwise, trying to track individual birds in the midst of this aerial chaos is a big ask for even the fastest camera/lens combination, so the best technique would seem to be to set your focus slightly in front of the cliff and keep firing away until you get lucky. I'm not a great fan of this shoot-and-hope style of photography, but sometimes there's no other choice. Also, given that the cliffs (which are north-facing) are in shadow most of the day, you may find you'll need high ISOs to adequately freeze the action. And, as you'll be aiming above your head for prolonged periods, a tripod or monopod might help to take the strain off your arms. I hope I'm not making this process sound like an exercise in futility, but when you do get a shot worth keeping it can be a very rewarding experience.

Evasive Action

Anyway, whether you're there to take photographs or to just enjoy the spectacle of a few dozen noisy hirundines flying over your head, the Sand Martin colony at Bishopstone is well worth a visit.

See also:
http://www.kentos.org.uk/Reculver/Reculverdetails.htm
http://www.birdforum.net/opus/Sand_Martin

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