The most austral record of Swallow-tailed Kite Elanoides forficatus

Abstract

Swallow-tailed Kite Elanoides forficatus is distributed across a variety of habitats from the eastern USA to northern Argentina. While two subspecies are recognised (E. f. forficatus and E. f. yetapa) they are morphologically similar and lack sexual dimorphism. E. f. forficatus breeds in the southeastern USA and winters in South America, whereas E. f. yetapa breeds in Central America and parts of South America, and at least its northern populations are apparently migratory...