Overview
The Bare-necked Umbrellabird (Cephalopterus glabricollis) is one of the most enigmatic and visually striking birds of the Central American cloud forests. Endemic to the mountain slopes of Costa Rica and western Panama, this large, crow-sized cotinga is renowned for its conspicuous forward-curving crest of dense black feathers that hangs over its bill like an umbrella. The male features a naked, brilliant scarlet-red throat patch and an inflatable, pendulous wattle that expands into an acoustic resonator during low-frequency courtship vocalizations.
Biology and Physical Characteristics
Cephalopterus glabricollis displays dramatic sexual dimorphism. Males are clad in glossy blue-black plumage, capped with a dense umbrella-like crest of curved, filamentous feathers extending over the crown and bill. His most extraordinary feature is his throat: bare of feathers and colored intense ruby-red, it terminates in a fleshy, feather-tipped pendant wattle that inflates with air like a crimson balloon. Females are slightly smaller, duller charcoal-black, and possess a much reduced crest and throat patch.
Behavior and Ecology
During the breeding season, males assemble at traditional exploded lek sites high in the subcanopy of montane cloud forests. To attract females, the male leans forward, spreads his black crest wide, inflates his red throat sac until it bulges, and produces a deep, booming resonance that sounds like a distant foghorn, reverberating across mountain ravines. Outside the breeding season, the species undertakes complex altitudinal migrations, descending from highland nesting forests to lowland foothills in search of fruiting lauraceous trees.
Conservation and Human Impact
The Bare-necked Umbrellabird is classified as Endangered by the IUCN. Because it depends on contiguous forest corridors connecting montane cloud forests to lowland foothill valleys for its seasonal altitudinal migrations, agricultural clearance, cattle ranching, and highway development severely imperil its survival. Protected reserves, such as the Monteverde Cloud Forest and Braulio Carrillo National Park, represent vital strongholds for its continued existence.
Interesting Factoid
The male Bare-necked Umbrellabird wears a feathery black parasol on top of his head and inflates a bright scarlet throat sac like a party balloon to produce deep, foghorn-like booms that can be heard half a mile across the rainforest canopy.
Last updated: October 2026