953037
9780691116037
Illustrated by over 200 photographs, this book includes newly discovered field marks. All 22 species found in North America are described, plus four more that can be expected as vagrants or occasional visitors in the near future, and juvenile males.Howell, Steve N. G. is the author of 'Hummingbirds of North America The Photographic Guide' with ISBN 9780691116037 and ISBN 0691116032.
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