Gannets on granite: Ailsa Craig

Ailsa Craig rises up out of the Firth of Clyde, rounded and rugged, a gigantic lump of rock hard granite. I had the pleasure of sailing past this small island, 1 .2 km in diameter and home to over 35,000 pairs of northern gannets (Morus bassanus) last month, on a short, three-day cruise out of Liverpool. Ailsa…