no-heard-only= only includes birds identified by sight.

How do I enter my list totals?

AT stands for All Territories & Provinces Added Together, and is determined by adding one’s life lists for each of Canada’s provinces and territories, 13 areas in all, whether or not you have reached the reporting threshold in all (or any) of them.

TT (Total Ticks) is the same principle, but on a wider scale. It includes all the states, provinces, and territories that lie within the ABA Area (thereby excluding Hawaii, but including Washington DC and the French islands of St. Pierre et Miquelon, which are in the ABA Area).



  • ABA Blog
  • The Eyrie
- Don Freiday

I recently got the news that I would be part of a four member team representing the Cape May Bird Ob [...]


A Guest Post by Dave Irons I was eleven when I first visited Harney County and Malheur National Wild [...]

- Lynn Barber

As many of you probably know, I am doing an Alaska big year. As the year goes along, I don’t plan to [...]

- The Eyrie

I was one of 8 young birders who attended the Western Field Ornithologists (WFO) conference in Billi [...]

- The Eyrie

This year I was lucky enough to get an internship with the New York City Parks Department. Officiall [...]

- The Eyrie

For so many of us, birding and writing go hand in hand. You can’t have one without the other. You ob [...]

ABA Marketplace

No items.