Brown-throated Sunbird

Overview

The Brown-throated Sunbird, also called the Plain-throated Sunbird, is a common and adaptable species found across Southeast Asia in mangroves, coastal scrub, gardens, and cultivated land. Unlike many sunbirds, its throat is dull brownish rather than iridescent, but males show a small, bright iridescent patch on the shoulder.

• Family: sunbirds (Nectariniidae)
• Diet: nectar and small insects
• Range: Southeast Asia, including the Malay Peninsula, Indonesia, and the Philippines

Feather Identification

• Throat: male feathers on the throat and upper breast are dull olive-brown, lacking iridescence, distinguishing it from most other sunbirds.
• Shoulder patch: a small, glossy purple-and-metallic-green patch is present on the lesser wing coverts of males.
• Underparts: belly and lower breast feathers are bright yellow.
• Upperparts: back and crown are olive to brownish, without strong iridescence.
• Vs. similar species: the plain brown throat paired with a small iridescent shoulder patch (rather than an iridescent throat) is the key distinguishing feature.

Plumage Notes

Adult males retain the brown throat and iridescent shoulder patch year-round. Females lack the shoulder patch and are duller overall, with olive-brown upperparts and pale yellow underparts. Juveniles resemble females and gradually develop the male's shoulder patch with maturity.

Habitat & Range

This adaptable sunbird occupies mangroves, coastal scrub, gardens, plantations, and forest edge across the Malay Peninsula, Sumatra, Java, Borneo, and the Philippines. It is largely resident and often common in human-modified landscapes.

Behavior

Brown-throated Sunbirds feed on nectar and small insects, often visiting flowering trees such as coral trees and mangroves. Nests are pouch-shaped and suspended from branches, built mainly by the female. Calls include sharp chips and a simple, repetitive song given from exposed perches.