National Geographic Field Guide to the Birds of North America, 7th Edition: A Field Guide Review
10,000 Birds
DECEMBER 5, 2017
So, yes, Thayer’s Gull is in the book, but the reader is cautioned that the gull with be lumped with Iceland Gull “in the near future.” Most of the species are described in the Species Accounts, arranged taxonomically into 86 family chapters. ” It’s a tough, fast-changing taxonomic world out there! .
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