67. Sterna sandvicensis acuflavida. 16 in.

Head crested; bill and feet blackish, the former with a yellow tip. Adults have the crown glossy black. Young birds, and winter adults, have the crown mixed with white, and the former have blackish markings on the wings; tail forked 2.75 in. Like the majority of terns, these breed in immense colonies.

Nest. - Their two or three eggs are deposited in slight hollows in the sand. They are cream colored, boldly spotted with blackish brown (2.10 x 1.40).

Range. - Breeds on the Florida Keys, Bahamas and the West Indies; later may stray north as far as New England; winters south of the United States.