10,000 Birds

MARCH 2, 2015

Conversely, parts of the world that have traditionally been quite dry may experience more rainfall. Though they breed on the tundra, Pomarine Jaegers spend most of their lives at sea. If a seabird is trying to breed, if all the forage is too far from their nest, their nest is guaranteed to fail.

North America 222

North America Birds Suffering San Francisco 222

10,000 Birds

DECEMBER 9, 2020

Splits were once a much more subjective determination, based on differences in appearance, vocalizations, habits, and breeding preferences. I have seen Mallards in places as distant as San Francisco and Munich. If you happen to have seen both species, your life list can increase without you even leaving the house.

San Diego 181

San Diego San Francisco Mexico Baltimore 181

10,000 Birds

NOVEMBER 14, 2017

There are arguments for adding all territories, but experience demonstrates that the ABA moves glacially when it comes to the ABA Area. Although most conservation research focuses on northern breeding grounds, many ABA Area birds spend most of the year elsewhere. The only other populated U.S. territories are Guam (pop.

Puerto Rico 159

Puerto Rico Virgin Islands Hawaii United States 159