圖書名稱:Peterson Reference Guide to Seawatching: Eastern Waterbirds in Flight
內容簡介
Providing cutting-edge techniques that take bird identification to a whole new level, this guide to seawatching, the challenging act of identifying waterbirds in flight, teaches birders how to identify birds based on their structure, behavior, wingbeat cadence and subtle flashes of color. 10,000 first printing.