We drove through low-lying land and eventually spotted the black-and-white striped lighthouse. As we headed out along the spit of land, with saltmarsh estuary on our right and the open sea on our left, I spotted web after web on the furze bushes that lined the road. When we had parked the car, I went to examine them, thinking that perhaps they were going to be nests for an unusual species of bird. It became all too apparent that my assumption was way out, for they were utterly heaving with young caterpillars. I asked a man sporting a deerstalker and a pair of binoculars, who told me that I should have read my Yorkshire Wildlife Trust ticket, since it contained a warning about the toxic nature of the barbed hairs of the caterpillars of the native Brown-Tail Moth (Euproctis Chrysorrhoea).
Our ticket informed us that the creatures emerge in spring from their white webs to feed on sea buckthorn. Apparently they shed their skins, releasing the hairs before 'pupating and flighting' as adult moths.
As if the moths weren't interesting enough, we learned that an apparently unringed white stork had been spotted that afternoon.