Greater Bird-of-paradise

Overview

The Greater Bird-of-paradise is one of the best-known members of the bird-of-paradise family, historically the source of ornamental plumes traded internationally. Males gather at traditional display sites to show off their elaborate flank plumes, while females are far plainer and easily overlooked.

• Male plumage centers on long, flowing flank plumes used in group courtship display
• Females are cryptically plumaged, unlike the ornate males
• Restricted to lowland rainforest of New Guinea and the Aru Islands

Feather Identification

Adult males show a maroon-brown body, a bright yellow crown and upper back, and an iridescent, dark green throat patch. The signature feature is the pair of long, filamentous flank plumes that begin yellow at the base and fade to white at the tips, extending well beyond the tail during display.

• Crown and nape: bright yellow
• Throat: iridescent emerald to bottle-green
• Body: maroon-brown
• Flank plumes: elongated, yellow at the base fading to white, with a soft, wispy texture unlike typical contour feathers
• Tail: dark, unremarkable compared to the flank plumes

The combination of yellow-to-white flank plumes with a maroon-brown body separates this species from the Raggiana Bird-of-paradise, whose plumes are more reddish, and from the Lesser Bird-of-paradise, which is smaller with shorter plumes.

Plumage Notes

Males require several years to acquire full adult plumage, passing through a subadult stage resembling females before growing the ornamental flank plumes. Females are rufous-brown overall, without a yellow crown or elongated plumes, aiding camouflage while nesting.

• Adult males: ornate plumage with elongated flank plumes
• Females and immature males: plain rufous-brown, camouflaged plumage
• Full plume development takes multiple years to complete

Habitat & Range

Found in lowland rainforest across southern and western New Guinea and the Aru Islands, generally staying within the forest canopy.

• Non-migratory resident of lowland tropical rainforest
• Rarely found far from continuous forest cover
• Occupies canopy and subcanopy layers for feeding and display

Behavior & Field Notes

Males gather at traditional communal display trees, called leks, where they perform coordinated movements to show off their flank plumes to visiting females. Diet consists mainly of fruit supplemented with small animal prey.

• Voice: loud, far-carrying calls given especially around display gatherings
• Nesting: females build and tend nests alone, with no male involvement after mating
• Field notes: males are most visible at established lek trees during display season; females are easily mistaken for other rainforest birds due to their plain plumage