Peterson Reference Guide to Seawatching; Eastern Waterbirds in Flight
This is a guide that teaches birders how to effectively identify North American eastern waterbirds in flight using a method of identification that emphasizes birds' structure, behaviour, and overall colour. Seawatching is the challenging act of identifying waterbirds in flight. Since more than a hundred different species can fly past an observation point, often at great speed or in tightly packed, mixed-species flocks, identification of these distant shapes can be a mystery. It is distinctive qualities of flying waterbirds that are the keys to the mystery. Be it wing beat cadence, individual structure, flock shape and behaviour, or subtle flashes of colour, all are revealed in this guide.