Non-Migrant: No. All populations of this species make significant seasonal migrations.
Locally Migrant: Yes. At least some populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: Yes. At least some populations of this species make annual migrations of over 200 km.
In Puerto Rico, common along southwestern coast June-October; few remain in coastal zone after October (Post and Wiley 1977). In U.S., apparently permanent residents south of Tampa, Florida, but numbers increase in northern part of range, possibly as a result of incursions from the Greater Antilles (Post et al. 1993).