Geographical variation in the Gray Kingbird, Tyrannus dominicensis

Abstract

The Gray Kingbird is migratory in the United States, the Bahamas, Cuba, and Jamaica, occurring normally in those places from March or April to September. In Central America, it appears only on migration. In northern South America, except for one apparent breeding record, it is found only in winter, from September to April or early May. In Hispaniola, Puerto Rico, the Virgin Islands, the Lesser Antilles, and certain islands off the north coast of South America, it is resident throughout the year. Trinidad and the Guianas are visited during the winter by some of the Lesser Antillean population.