Mohrenhokko

Bestimmung

The black guan is 62 to 69 cm (2.03 to 2.26 ft) long and weighs about 1,135 g (2.502 lb). Adults have all black plumage with contrasting bright blue facial skin around a red eye. Their legs and feet are pinkish-red. Juveniles are similar but less glossy and their underparts browner and their facial skin is blackish or dark brown.

Taxonomie

The black guan shares the genus Chamaepetes with the sickle-winged guan (C. goudotii) of western South America and may form a superspecies with it.

Wissenschaftlicher Name

Chamaepetes unicolor

Autorität

Salvin, 1867

Ordnung

Hühnervögel

Familie

Hokkos (Cracidae)

Gattung

Chamaepetes

Verbreitung und Lebensraum

The black guan is found from the Cordillera de Guanacaste in northern Costa Rica to western Coclé Province in Panama. It inhabits cloudforest in the Talamancan montane forest ecozone. It prefers steep terrain in the temperate, subtropical, and tropical zones, usually between about 1,000 and 2,250 m (3,280 and 7,380 ft) of elevation, but in some areas as low as 800 m (2,600 ft) and in others as high as 3,000 m (9,800 ft).

Zugverhalten

Resident species

Verhalten

The black guan is thought to be mainly sedentary but there is some evidence of seasonal elevation changes.<p>The black guan forages singly, in pairs, or in small groups. Its primary diet is fruits; studies in Costa Rica have identified at least 35 different species eaten. It mostly feeds in trees but will also eat fallen fruit on the ground.<p>The black guan's breeding season is believed to span from February to June. The one described nest was a small platform of twigs and leaves placed in a clump of epiphytes in a tree 4.5 m (15 ft) above the ground. The clutch size is two or three eggs.<p>The black guan's vocalizations include piping calls in the breeding season, a "a low, deep 'ro-rooo' or coughing 'kowr' if disturbed", and a "tsik tsik..." alarm call. At dawn and dusk it gives a "loud, sharp, crackling" wing-rattling display.

Schutzstatus

Bestandstrend

declining