The Crossley ID Guides

The Crossley ID Guide Britain and Ireland Richard Crossley and Dominic Couzens

A groundbreaking and accessible field guide to the birds of Britain and Ireland

The Crossley ID Guide Raptors Richard Crossley, Jerry Liguori, and Brian L. Sullivan

A revolutionary, comprehensive, and authoritative photographic guide to North America's raptors

The Crossley ID Guide: Eastern Birds Richard Crossley

The acclaimed book that has revolutionized birding and field guides
"[The Crossley ID Guide] has turned the traditional field guide on its ear."—Wall Street Journal
"Deserves to be your essential resource for definitive species identification."—Richmond Times–Dispatch