Hemprich and Ehrenberg, 1828,
#R Arabia and Ethiopia.
Thought to be part of a clade with C. senegalensis, C. monachus and C. cupreicaudus#R. Form burchellii might be recognized as a full species (with fasciipygialis as a race), although intermediates (apparent hybrids between forms with a supercilium and forms without) are known in Zimbabwe, Zambia, Mozambique and N Malawi; difference in plumage suggests that adults of N forms have retained a juvenile-like plumage (with white supercilium and brown crown and hindneck), while adults of S form burchellii have a glossy black head and neck derived from an additional, final plumage following the streaked plumage in which some individuals breed#R. Race fasciipygialis was thought probably a variant of burchellii in HBW, but subsequently accepted as taxonomically distinct#R. Birds from Socotra and SW Arabia sometimes separated as race sokotrae, but seem to be generally indistinguishable from nominate superciliosus#R. Four subspecies currently recognized.
Food and feeding
Status and conservation
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