Announced on the Brooklyn Bird Club website, the fundraising cause will be to the benefit of WINORR Wildlife in Need of rescue and Rehabilitation. WINORR was instrumental in saving a Snowy Owl with a broken wing this past winter in Brooklyn, See the link about the organization
http://brooklynbirdclub.org/announcing-our-world-migratory-bird-day-birdathon/
This years Birdathon is May 12th.