guinea fowl, common name for any of the seven species of gallinaceous birds of the family Numididae, native to Africa and Madagascar. The helmeted guinea fowl, Numida meleagris, from which the domesticated strains are descended, is typical of the family, with its bare head and neck, sleek body, smooth dark feathers dotted with white, and short tail. It is named for its bony casque. Guinea fowls are raised, mainly for their gamey flesh, in many parts of the world. Of the three domestic varieties (the pearl, the white, and the lavender), the purplish-gray colored pearl is the most common. The largest member of the family is the 24-in. (60-cm) vulturine guinea fowl, Acryllium vulturinum, found in tropical E Africa. Guinea fowls are extremely good runners and use this method, rather than flying, to escape predators. Guinea fowls are known to have been domesticated by the ancient Greeks and Romans. They are classified in the phylum Chordata, subphylum Vertebrata, class Aves, order Galliformes, family Numididae.

Any of a family (Numididae) of African birds, sometimes placed in the family Phasianidae. One species (Numida meleagris) is widely domesticated for its flesh and, because it gabbles loudly at the least alarm, as a “watchdog” on farms. Wild forms of this species are known as helmet guinea fowl because of their large bony crest. Many varieties are widespread in the savannas and scrublands of Africa, and the guinea fowl has been introduced into the West Indies and elsewhere. About 20 in. (50 cm) long, in its typical form it has a bare face, brown eyes, red and blue wattles at the bill, white-spotted black plumage, and a hunched posture. It lives in flocks and feeds on seed tubers and some insects.

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