bird count

[Anne Kilmer]

When you're out butterflying this weekend (Feb. 19-22), keep an eye out
for birds. Cornell University is counting backyard and neighborhood
birds, and would like a list of your sightings. 
http://birdsource.cornell.edu/gbbc
All the information you need is at this website, including bird
information. North America only (Canada included, of course).
Presumably they can filter out the optimistic and improbably recordings.