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

PLEASE NOTE

The ABA Area now includes Hawaii (ABA Checklist update, and official listing area definition coming later this year). Please do not enter year or month list totals in the ABA Area before 2017.

ABA Continental is the ABA area by pre-2017 definition, that is, without Hawaii.

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

If you haven’t been paying attention to Cornell’s exceptional Birdcast site in preparation of the co [...]

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The next episode of the American Birding Podcast is live! Nathan Pieplow’s new field guide is a depa [...]

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Chandler Seymour Robbins, one of the greatest birders and field ornithologists of all time, died yes [...]

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The judges have reviewed all of the outstanding entries. ABA staff has compiled the scores. After mu [...]

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In 2014 I was given the opportunity to go birding for the first time as part of a new All About Bird [...]

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Did you know the Bar-tailed Godwit has the longest non-stop, flapping flight migration of any bird i [...]

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