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Kellen A — February 04, 05:43AM

What is a Big Day?

I keep hearing about people doing "big days." What are they? Can they be done on any day?
Thanks in advance!

Menlo — February 05, 10:43AM

it means: a full day of birding within which one tries to see as many species as possible in one single day (midnight to midnight). Usually they are done at a county, or state level. Or not.
A big day is the 24 hrs equivalent of a 'Big Year' when one tries to see as many species as possible in a single calendar year Jan 1 to Dec 31.
When entering bid days data into eBird, small scale checklists are much more valuable than, say, a 24 hrs list at , say, a county level or with, say, a 200 miles distance.
However, since during a big day one is busy getting many species, 'incomplete' list protocols are better since presumably one is not counting all individuals from all species seen, because mainly focusing on the species one is trying to add to the big day list

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