Guianan Cock-of-the-rock

The Guianan Cock-of-the-rock is a vividly colored songbird found in lowland and hill forest across the Guiana Shield region of northern South America, closely related to the Andean Cock-of-the-rock but adapted to lower-elevation forest with rocky outcrops rather than montane cloud forest.

Males share the striking flattened crest of their Andean relative and perform similarly elaborate lek displays, typically near boulder fields or rocky forest clearings, to attract females for mating.

• Male body is bright orange-yellow, generally slightly paler and more yellow-toned than the deeper orange of the Andean Cock-of-the-rock
• Crest is a large, flattened, disc-shaped structure of modified feathers extending from the bill to the crown
• Wings show black-and-white patterning, with pale buff or whitish markings contrasting against darker flight feathers, differing from the plain silvery wing band of the Andean species
• Tail is short and dark relative to body size
• Female is dull grayish-brown overall, lacking the bright coloration and exaggerated crest, aiding camouflage at the nest
• Distinguished from the Andean Cock-of-the-rock by its more yellow-orange tone, different wing pattern, and lowland (rather than montane) range

Adult males display the bright orange-yellow body, black-and-white wing markings, and large disc-shaped crest described above, fully developed plumage reached only at maturity and prominently used in lek displays. Females are uniformly dull grayish-brown, without the crest's exaggerated form or bright coloration, well camouflaged at the nest. Juveniles resemble females, with young males gradually developing full adult coloration and crest structure over several years.

This species inhabits lowland and hill tropical forest across the Guiana Shield, including Guyana, Suriname, French Guiana, and adjacent parts of Venezuela and Brazil, often near rocky outcrops, boulder fields, and forest streams. It is largely resident, with males maintaining fidelity to traditional lek sites near suitable rocky terrain.

Guianan Cock-of-the-rocks feed primarily on fruit, along with some insects and small vertebrates, foraging within the forest canopy and understory. Males gather at communal leks near rock outcrops, performing bobbing and hopping displays paired with harsh calls to attract females. Females construct cup nests of mud and plant material on rock faces or cave-like crevices, and they raise the young without male assistance.