Much more than a field guide, this essential reference includes detailed descriptions of all the world's seabirds, full-color paintings of adult and juvenile birds and keys to identification. It's definitive, authoritative and weighs in at over a pound. The late Roger Tory Peterson called its publication "a red letter day for the field glass fraternity." Also available is Harrison's more portable Field Guide to Seabirds of the World.  (FG01, $32.00)