The Helmeted Guineafowl (Numida meleagris) is the best known of the guineafowl bird family, Numididae, and the only member of the genus Numida. It breeds in Africa, mainly south of the Sahara, and has been widely introduced into the West Indies, Brazil, Australia and southern France.
The helmeted guineafowl is a large (53–58 cm) bird with a round body and small head. They weigh about 1.3 kg. The body plumage is gray-black spangled with white. Like other guineafowl, this species has an unfeathered head, in this case decorated with a dull yellow or reddish bony knob, and red and blue patches of skin. The wings are short and rounded, and the tail is also short.
This is a gregarious species, forming flocks outside the breeding season typically of about 25 birds that also roost communally. Guineafowl are particularly well-suited to consuming massive quantities of ticks, which might otherwise spread lyme disease. These birds are terrestrial, and prone to run rather than fly when alarmed. Like most gallinaceous birds, they have a short-lived explosive flight and rely on gliding to cover extended distances. Helmeted Guineafowl are great runners, and can walk 10 km and more in a day. They make loud harsh calls when disturbed.
Males often show aggression towards each other, and will partake in ravenous fighting which will leave other males bloodied and otherwise injured. Attempts at making themselves look fearsome is when their wings raise upwards from their sides and feathers bristle across the length of the body, or they may also rush forwards with a gaping beak.