As I neared the cliff, the full force of the storm became clearer. There had been a rock fall as well and the entire ash tree which had once supported the nest had been torn from the cliff face, roots and all. As the chicks had plummeted earthwards at the height of the gale, they would have been followed by a deadly cascade of boulders, branches and mud. Out of breath and with sweat stinging my eyes, I clambered up the…