G. A. Fischer and Reichenow, 1884,
Hitherto treated as conspecific with P. fuligula and often P. obsoleta, but differs from former in its much smaller size (effect size for wing −7.1, score 3); higher-pitched voice (2)#R; darker upperparts (1); and pinkish-buff of throat rather abruptly switching to dusky grey on breast to belly vs extending onto breast and shading to dark pinkish-grey on belly (2). Differs from latter in its smaller size (effect size for wing vs P. o. pallida −1.25, score 1); stronger, darker pink-tinged throat (1); breast and belly dusky grey vs whitish-pink shading gently to mid-grey on lower belly (3); sooty-grey vs mid-grey to pale grey upperparts (2). Included P. o. pallida when grouped in HBW, but see P. obsoleta. Proposed race birwae (Sierra Leone, Guinea) included in nominate. When considered congeneric with Petrochelidon rufigula (e.g. when both were treated in Hirundo), name rufigula of present species becomes preoccupied, and is replaced with fusciventris; latter name erroneously retained in HBW. Two subspecies recognized.
Food and feeding
Status and conservation
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