Brown-throated Sunbird

Fascinating facts about the Brown-throated Sunbird

• At just 14 cm long and weighing between 7.4 g and 13.5 g, the brown-throated sunbird. Males tip the scale a bit higher, with some individuals reaching 16 cm while females hover around 13 cm, and both sexes spread a 19-cm wingspan for rapid, direct flight.
• Stretching from Myanmar across the Indonesian archipelago to the western Philippines, the brown-throated sunbird occupies a swath of Southeast Asia. It thrives from sea level up to 1,500 m, nesting in rainforests, mangroves, city parks and even suburban gardens. This breadth of habitat means the species encounters a mosaic of flowering plants, making it a pollinator across diverse ecosystems.
• While nectar fuels most of its day, the brown-throated sunbird also snatches tiny fruits, berries and insects, especially for growing chicks. Its thin, down-curved bill and brush-tipped tubular tongue act like a straw that curls inward, ensuring no nectar is spilled as it sips. By flitting from bloom to bloom, the bird transfers pollen, making it a key pollinator for many Southeast Asian plants and helping sustain the very flowers it depends on.
• Brown-throated sunbirds form monogamous pairs that stay together year-round, nesting up to three times a year when food is abundant. The female builds a dome-shaped nest in 10-16 days, using dry grasses and spider silk, then lays 1-3 eggs which she incubates alone for about 18 days. Both parents then feed the hatchlings, the chicks fledging after roughly 12 days but staying with parents for several weeks.
• Despite a fast-paced lifestyle, the brown-throated sunbird lives about seven years in the wild, a respectable span for a bird. To conserve energy, it enters nightly torpor, lowering its body temperature.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia
• Animal Diversity Web

At a glance

About the Brown-throated Sunbird

The Brown-throated Sunbird (Anthreptes malacensis) is a small but striking avian jewel, displaying a vibrant palette that captivates the eye. Males flaunt a glossy greenish-black head that transitions into brilliant yellow underparts, while their distinctive brown throat adds a touch of warmth to their overall appearance. Females, although less flamboyant, boast a subtle beauty with olive-green upperparts and a pale yellow belly. These sunbirds inhabit a range of tropical environments, including lowland forests, mangroves, and urban gardens across Southeast Asia, from the Malay Peninsula to the Philippines. Their adaptability to various habitats showcases their resilience in an ever-changing world. As they flit from branch to branch, their quick movements and high-pitched calls reveal a personality full of life and energy, making them a delight to observe in the wild. In their quest for sustenance, Brown-throated Sunbirds exhibit fascinating feeding behaviors, often hovering like miniature hummingbirds as they sip nectar from tubular flowers. This nectarivorous diet is supplemented by insects and spiders, which provide essential proteins for breeding adults and their growing chicks. One surprising trait of these sunbirds is their ability to recognize specific flower shapes and colors, demonstrating a remarkable level of cognitive awareness that enhances their foraging efficiency. As they dart through the foliage, their iridescent feathers shimmer in the dappled sunlight, creating a dazzling display that reminds us of the intricate relationships between pollinators and the plants they serve, urging the observer to ponder the delicate balance of nature's design.

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