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).

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- Nate Swick

This time of year is hard for rarity hunters, and even moreso for hunters of rarity records. Listser [...]

- George Armistead

In October of 2014, the ABA partnered with Rockjumper Worldwide Birding Adventures to offer a new ki [...]

- Greg Neise

I started birding in 1972, and took to it like an ibis takes to drainage ditches. I pretty quickly l [...]

- Jacob Gorneau

Rensselaerville Falls, Huyck Preserve and Biological Research Station. July 13, 2014. What: Wildlife [...]

- Matty Hack

For many birders, February is a month of waiting. After February, the snow will melt and the first K [...]

- The Eyrie

At the beginning of this year, I remembered missing the chance to spot a Snowy Owl when the bird sto [...]

ABA Marketplace

Wanted: Zeiss Victory FL 10x42 binocular in excellent optical condition. Minor body blemishes OK. Li [...]

Swarovski Binoculars: Swarovision EL, 8.5 x 42, like new $1,990. Bausch & Lomb Elite Binoculars: [...]

The Most Interesting Birds Make for a Most Interesting Visit. North Dakota is in the middle of the C [...]