Taxonomic notes on the White-collared Swift (Streptoprocne zonaris)


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The White-collared Swift (Streptoprocne zonaris) is a large, gregarious, strongly-flying species found from Mexico and the Greater Antilles to Argentina, and from the Tropical to the Temperate Zone. Five subspecies were recognized in the standard check-list of Peters (1940), and an additional subspecies was described by Niethammer in 1953. This study of a series of 225 specimens shows that recognition of two previously synonymized subspecies was warranted. A large area of the Subtropical Zone of South America is occupied by a subspecies universally known in the literature as albicincta, but which does not match the holotype of that subspecies and is hence nameless; it is described herein as new.