10,000 Birds

DECEMBER 14, 2021

As of mid-November 2021, the Collaborative had submitted more than 4,200 checklists (up from 1,700 in 2018) and has observed 691 species in the United States (up from 618). Thus, there are now seven states with 200+ observed species. The state with the largest increase was Arizona , with 139 species added.

West Virginia 238

West Virginia United States Puerto Rico Minnesota 238

10,000 Birds

NOVEMBER 13, 2018

As of mid-October 2018, the Collaborative had submitted more than 1,700 checklists and observed 618 species in the United States. The heat map is revealing: Unsurprisingly for a site founded and run by two New Yorkers (one of whom literally wrote the book on birding New York), the Empire State boasts the highest number of species (316).

Rhode Island 115

Rhode Island United States West Virginia Puerto Rico 115

10,000 Birds

OCTOBER 1, 2011

I missed some very common species. Some were glaring misses since I started the year with a goal of 600 species (while working). Bicknell’s Thrush is a bird that is important to me because I grew up in New York’s Catskill Mountains, one of the places that it breeds. Washington in New Hampshire in July.

New York City 157

New York City New Hampshire New York Research Center 157

10,000 Birds

JULY 6, 2020

And in April, he sees the return of the many species he has seen in that month in years past – but, also, weirdly, a Virginia Rail, a reclusive marsh bird, flopping around the sidewalk in downtown D.C. (the In addition to his D.C.

New Hampshire 258

New Hampshire Washington Virginia Montana 258