The common scoter has long haunted the edges of my mind. I think of this handsome duck migrating from its summer breeding grounds in the boreal lakelands of Scandinavia. I watch for the tattered ribbons of its flight formations arriving to winter along this coast. I scrutinise the sea for flocks far offshore.
Because even here in Dundrum Bay, where large winter flocks gather, any sighting is hit and miss. Scoters’ flocking behaviour is reinforced by the patchy distribution of their mollusc prey. The ducks congregate over shellfish beds, diving from the surface to seize an individual shellfish, which they then swallow whole, to digest – shell and all – in their powerful gizzards. But as a flock drifts and flies from bed to bed, from my perspective on the beach, the birds easily dissolve into a vast and moving sea.
