A comparison of molting adult Eastern and Western Willets Tringa semipalmata semipalmata and inornata at Bolivar Flats, Galveston, Texas on July 26, 2008. There were still numerous Eastern Willets (molting adults and juvs) along the coast but this was the first Western Willet I'd seen, arriving slightly ahead of the main adult arrival in August. Most Easterns are gone from Texas by September, leaving just Westerns to spend the winter here. In Spring there is again about a 4 or 5 week overlap (c. April) when Easterns have returned from further south to breed and Westerns have not yet departed to their breeding grounds to the northwest:
