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
- Nate Swick

It was a slower week to be sure, but Texas takes its accustomed place as the center of the ABA rarit [...]


By Nate Swick and George Armistead 2013 was an incredible year for vagrants, particularly unexpected [...]

- Nate Swick

You may remember the ABA’s initiative to sell Duck Stamps through our offices as a way to make birde [...]

- Jacob Gorneau

As the year winds down, many of us are enjoying or preparing for Christmas Bird Counts! [...]

- The Eyrie

When I took on the challenge of the 2014 Young Birder of the Year Contest, I was fully aware that it [...]

- The Eyrie

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

ABA Marketplace

Swarovski Digital Camera Adapter with three step adapter rings M28, M37, and M43. These currently se [...]

Texas ranch style 3 bedroom, 3 bath house holds many avian and lep records, famous in the birding wo [...]

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