Each year Bighorn Audubon Society participates in the World Migratory Bird Day Spring Bird Count, created in 1993 at the Smithsonian Migratory Bird Center and the Cornell Laboratory of Ornithology. The count is similar to Audubon’s Christmas Bird Count but is conducted on one day each year: the second Saturday in May in the U.S. and Canada, and in October in Mexico, Central and South America, and the Caribbean.