P. L. Sclater, 1866,
Cape of Good Hope, South Africa.
Recent molecular phylogeny#R placed this species in a clade with A. niansae, A. bradfieldi, A. berliozi, A. unicolor, A. alexandri, A. pallidus and A. apus. Generally thought to be closest to A. bradfieldi, A. berliozi and A. pallidus. Has been considered conspecific with A. apus and also with A. niansae and A. unicolor. Frequently (as in HBW) considered to include A. sladeniae as a race (but see below); commonly includes also A. balstoni (see below). It has been suggested that race hollidayi, if it remains a distinct breeding population despite presence of migratory nominate race during local breeding season, may prove to be a separate species. Current knowledge about taxonomic status of glanvillei and serlei to some extent compromised by scarcity of specimens; racial identity of population resident in N Liberia unknown, but may prove to be A. sladeniae. Six subspecies recognized.
Food and feeding
Status and conservation
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