Razor-billed Curassow

Identification

The razor-billed curassow is a large, striking galliforme measuring 83 to 89 centimetres in length, with males weighing around 3,860 grams. Its plumage is predominantly black with a striking purplish-blue gloss that catches the light beautifully. The lower belly and undertail coverts provide a warm chestnut contrast, while white tips on the tail feathers add subtle detail. Most distinctive is the bird's tall, ragged crest and its large, bright red bill that is laterally compressed—a feature that inspired its common name.

Range & Habitat

This species inhabits much of the Amazon Basin across four South American countries: Bolivia, Brazil, Colombia, and Peru. It is mostly found south of the Amazon River in eastern Peru, northern Bolivia, and northern Brazil extending to the Atlantic coast, with populations also occurring north of the Amazon in southeastern Colombia and along the Rio Negro in Brazil. The razor-billed curassow prefers lowland evergreen forests, particularly terra firme (upland forest), but also frequents gallery forests along waterways and várzea forests. The species' elevation range extends from sea level to 1,350 metres, though it typically remains below 1,000 metres.

Behaviour & Diet

This curassow typically forages alone or in pairs directly on the forest floor, where it searches for fallen fruits that comprise the bulk of its diet. It also consumes leaves, insects, fungi, and small vertebrates as dietary supplements. The species is occasionally polygynous and may breed regularly in this system. In northern Peru, the nesting season runs from November through February, with females constructing distinctive cup-shaped nests from branches, lianas, and leaves. Clutch sizes are typically two or three eggs.

Best Time & Places to See It

The razor-billed curassow is vocal during the breeding season from November to February in northern Peru, when deep booming calls resonate through the forest. The bird sings from a perch at any time of day but most frequently at dawn and before dawn. Its large range across Amazonian lowland forests and protected areas in Peru, Bolivia, Brazil, and Colombia offers multiple opportunities for encounters, though its preference for the forest floor and gallery forests along streams and lakes may make locating it challenging. Early morning visits to terra firme and várzea forests offer the best prospects.

Photography Tips

The razor-billed curassow's striking plumage—glossy black with chestnut underparts and that distinctive red bill—photographs beautifully in dappled forest light. Its large size and ground-feeding behaviour offer advantages for photographers, though the dense forest habitat demands patience and a fast-focusing telephoto lens. Dawn visits when the bird sings from a perch provide the best opportunities to locate and photograph it before it descends to forage. The bird's tall crest and bright colouration make it visually dramatic; position yourself to capture the purplish-blue gloss on its plumage and the intensity of its red bill.