Eastern bearded greenbul

Criniger chloronotus

TAXONOMY

Trichophorus chloronotus Cassin, 1860, Gabon. Forms super-species with C. barbatus.

OTHER COMMON NAMES

French: Bulbul crinon oriental; German:Haarbulbul; Spanish: Bulbul de Lomo Verde.

PHYSICAL CHARACTERISTICS

7.5-8.3 in (19-21 cm); 1.3-1.5 oz (38-45 g). Large bulbul; breast and head gray, few black bristles on hindneck and mantle. Mantle, rump, and wings yellow-green olive. Tail bright rust-maroon. Chin and throat white, appears puffy and beardlike, creamy belly. Sexes alike. Juvenile resembles adult.

DISTRIBUTION

Endemic central Africa; Cameroon, Gabon, southern Congo, western Zaire, Angola, Central African Republic, western Uganda.

HABITAT

Lowland rainforest, lower montane forest to 5,900 ft (1,800 m). BEHAVIOR

Often occurs in groups; three to five birds, seem to unite by song of leader. Group territory defended by chorus and displays in which "beard" is puffed out. Mournful song of two quavering notes.

FEEDING ECOLOGY AND DIET

Mainly eats insects and their eggs, some fruit.

REPRODUCTIVE BIOLOGY

Territorial, possibly a cooperative breeder. Solid cuplike nest decorated with tropical epiphytic fern Microgramma owariensis, which stays green through fledging. Usually two eggs, incubation 14 days by female only.

CONSERVATION STATUS

Not threatened. Fairly common in range.

SIGNIFICANCE TO HUMANS None known. ♦

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