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
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- Michael Retter

If you haven’t yet seen John Cahill’s article in the October 2014 issue of Birder’s Guide to Listing [...]

- Michael Retter

Three hundred eighty-eight birds in one year in one county? Yes. It is possible. And Barbara Carlson [...]

- Nate Swick

Christmas Bird Count season kicked off this week, and it was this annual census that formed the back [...]

- The Eyrie

By Carl Bendorf On June 14-15, 2014, Iowa Young Birders and Illinois Young Birders hosted a joint fi [...]

- Lucas Bobay

November has truly been “Novembird” for much of the ABA area, with a smattering of great birds sprea [...]

- Aidan Place

Recently, I have noticed an interesting phenomenon. More and more young birders have been leading bi [...]

ABA Marketplace

BA (black armored), strap, original box and leather case. Lightly used. Optics in excellent like-new [...]

We have booked a tour with China Birding Tour out of Chengdu. We can add six more participants, a to [...]

Konus 20-60x100 spotting scope,rain and fog proof,soft case and instructions. Excellent clarity and [...]