International Migratory Bird Day (IMBD) in the Yahoo! Directory

International Migratory Bird Day
Annual event on the second Saturday in May which celebrates the journeys of migratory birds between their breeding grounds in North America and their wintering grounds in Mexico, Central, and South America.
www.birdday.org
U.S. Fish and Wildlife Service: International Migratory Bird Day
Includes event registry and suggested ways to celebrate IMBD, a day to support migratory bird conservation.
www.fws.gov/birds/IMBD