10,000 Birds

MARCH 3, 2020

In what has become the modern-day traditional method of organization, species are listed and described on the left-hand page and illustrative plates are on the right. Each species is numbered, with the numbers referring to the illustrations on the right. More on Species Accounts.

Bolivia 173

Bolivia Birds Brazil Switzerland 173

10,000 Birds

MAY 19, 2011

All of this leads to a longer life list, which is, after all, the entire point of bridwatching, right? If migration evolved many times in birds, then it would be worth asking if it evolved in birds more often than in other groups of vertebrates. Another question this raises has to do with migration itself. Why migrate?

Research 192

Research Humane Compassion New York 192

10,000 Birds

SEPTEMBER 7, 2021

All species in every one of these groups is described even if not every single species lives on the ocean, a guideline continued from the earlier volume. All species in every one of these groups is described even if not every single species lives on the ocean, a guideline continued from the earlier volume.

Albatross 279

Albatross Penguins Family Groups 279