America Breeding Pedigree Species 
10,000 Birds
AUGUST 6, 2011
The ABA is still considering its response to the gull and its provenance, but more to the point, Jochen has called its pedigree into question by asserting that it is a Ring-billed Gull x Black-headed Gull hybrid. This one has not yet taken the grey head of the breeding bird.
10,000 Birds
MARCH 1, 2019
Books about birds are a wealth of written and pictorial information to birders, and an exalted few have become watersheds in the history of ornithological study: Ornithologiae by Francis Willughby, Birds of America by John James Audubon, and Guide to the Birds by Roger Tory Peterson, to name just a few of the most legendary.
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