TEST Breeding Examples Species 
10,000 Birds
MAY 19, 2015
The feature distinguishes birds from other species; All birds have them, no other species do. Beaks vary across different kinds of birds, and this great diversity in beaks is part of the great diversity of the 10,000+ species of birds that exist today; Beaks thus facilitated the diversification of birds. So how did beaks evolve?
10,000 Birds
JULY 26, 2015
I was still telling the truth when I mentioned the four subspecies, species, taxa, forms, you name it, of the Great Egret: modesta (Asia), alba (Europe, Asia), egretta (Americas) and melanorhynchos (Africa). alba : yellow in non-breeding season (usually less bright than egretta ), entirely black in breeding season. This is easy.
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10,000 Birds
DECEMBER 15, 2015
Where predators are rare, turning more attention to feeding might produce a Darwinian benefit, for example. Most likely, all individuals of a given species have very similar genes guiding very similar developmental processes, but produce different results because the plasticity itself is selected for. Invasion of the birdie snatchers.
10,000 Birds
DECEMBER 4, 2018
Even more than warbler, shorebird, and sparrow identification, this is a field that tests our endurance (gull watching is too often done in bitter cold, windy conditions), patience (even getting one good photo can take hours as you try to separate the ‘interesting gull’ from the flock), observational skills (so many plumages!)
4 The Love Of Animals
NOVEMBER 24, 2009
Understanding a pointed finger may seem easy, but consider this: while humans and canines can do it naturally, no other known species in the animal kingdom can. It’s no coincidence that the two species that pass Hare’s pointing test also share a profound cross-species bond.
10,000 Birds
MAY 14, 2016
How can we say that magic is a farce when the May blossoms are backdropping bright, breeding plumaged Canadas , Magnolias , Chestnut-sideds , chocolate Bay-breasteds , and Rose-breasted Grosbeaks ? When we scuff our knees and test the resiliency of our joints to peer into a bush at a Swainson’s Warbler in an urban park?
10,000 Birds
JANUARY 7, 2020
The book is divided into three parts: “Introduction,” “Avifaunal Overview,” and “Species Accounts.” The authors’ detailed delineation of problems with the accuracy of NYC breeding bird surveys or with the limits of historical writings may test a reader’s patience. Most birders will go straight to the “Species Accounts.”
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