2005 Branding Breeding Family 
10,000 Birds
MARCH 11, 2011
Brown Pelicans , and the northernmost Brown Booby breeding colony on this side of the Pacific. That larger clade is in turn sister to a clade containing the four remaining totipalmate bird families, which do still seem to be related, and which needed a new order name once pelicans were removed.
10,000 Birds
DECEMBER 5, 2017
The Sibley Guide to Birds, 2nd edition (2014) covers 923 species; The Stokes Field Guide to the Birds of North America (2010) 816; Peterson Field Guide to Birds of North America (2008) 544; Smithsonian Field Guide to the Birds of North America (2008) 528; and the Kaufman Field Guide to Birds of North America (2005) covers 392 species.
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