Article: Food, foraging, and timing of breeding of the black swift in California.

The Black Swift (Cypseloides niger) is a member of the subfamily Cypseloidinae which consists of 12-13 species, most of which are tropical or subtropical in their breeding distribution. The Black Swift is found locally in the West Indies, Middle America, and north through much of western North America to southeastern Alaska (Bent 1940; AOU 1957, 1983). For a species with such a wide latitudinal distribution, quantitative data on diet and timing of breeding are rare. Most of what is known about the Black Swift is limited to breeding and distributional records (e.g., Vrooman 1901, 1905; Michael 1927; Dixon 1935; Knorr 1961; Foerster 1987; Foerster and Collins 1990; Stiles ...

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