Regal Sunbird

Overview

The Regal Sunbird inhabits high-elevation forests of the Albertine Rift in central Africa, including the Rwenzori Mountains and volcanic ranges bordering Rwanda, Uganda, and the Democratic Republic of Congo. Males are strikingly colorful, with an iridescent green head and back giving way to bright yellow and scarlet underparts. Females are a more muted olive-yellow.

• Family: sunbirds (Nectariniidae)
• Diet: nectar and small invertebrates
• Range: Albertine Rift montane forests, central Africa

Feather Identification

• Head and back: male feathers show glossy emerald-green iridescence across the crown, nape, and mantle.
• Underparts: breast and belly feathers are golden-yellow, often with a scarlet patch across the upper chest.
• Tail: central tail feathers can show a metallic green sheen with elongated tips in some males.
• Flight feathers: primaries and secondaries are dark and non-iridescent, providing contrast with the glittering body plumage.
• Vs. similar species: the combination of green upperparts with yellow-and-scarlet underparts at high elevation habitats helps separate it from lowland sunbirds with different color patterns.

Plumage Notes

Adult males retain their bright green, yellow, and scarlet plumage throughout the year with little seasonal variation. Females and juveniles are duller, showing olive-green upperparts and yellowish underparts without iridescence. Molt replaces worn feathers gradually, and freshly grown plumage appears more saturated in color than worn, sun-faded feathers.

Habitat & Range

This species is restricted to montane and submontane forest, forest edge, and adjacent scrub in the Albertine Rift region, typically at elevations above 1,600 meters. It is largely resident, moving locally in response to flowering patterns of montane plants such as mistletoes and balsams.

Behavior

Regal Sunbirds feed primarily on nectar using a slender decurved bill, and they also take small insects and spiders, often by gleaning foliage or hawking briefly in flight. They build small pouch-shaped nests suspended from vegetation. Vocalizations include a high, thin warbling song and sharp chipping calls used during territorial encounters at flowering shrubs.