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The female has an olive-green back, yellowish breast and white tips to the outer tail feathers. In most of the range, males have a long green-blue tail, but A.s. nicobarica of the Nicobar Islands and the former subspecies A. vigorsii ( Western crimson sunbird ) of the Western Ghats of India lack the long central tail feathers.
Vigors's sunbird (Aethopyga vigorsii), Sahyadri sunbird, or western crimson sunbird, is a species of sunbird which is endemic to the Western Ghats of India. It has been considered as a subspecies of the crimson sunbird (Aethopyga siparaja) but it does not have the central tail as elongated and is restricted in its distribution.
Clockwise from top left: ruby-cheeked sunbird, collared sunbird, Loten's sunbird, little spiderhunter, fire-tailed sunbird, and malachite sunbird. Nectariniidae is a family of passerine birds in the superfamily Passeroidea, comprising the sunbirds and spiderhunters. [1] Members of Nectariniidae are also known as nectariniids. [2]
The larger purple-rumped sunbird can appear very similar but this sunbird has a darker maroon on the upper side while the flanks and vent are whitish. The eclipse plumage (non-breeding) of the male has more olive on the head and velvet red is restricted to the lower mantle and wing coverts. The female is olive-brown but the rump is distinctly red.
Sunbird drinking nectar from typical bird-pollinated flower As nectar is a primary food source for sunbirds, they are important pollinators in African ecosystems. Sunbird-pollinated flowers are typically long, tubular, and red-to-orange in colour, showing convergent evolution with many hummingbird -pollinated flowers in the Americas. [ 10 ]
The magnificent sunbird (Aethopyga magnifica) is a striking species of bird in the sunbird family. It is endemic to the Philippines found in the Visayan islands of Negros Island, Panay, Cebu, Tablas Island and Romblon. It was considered a subspecies of the crimson sunbird.
Mrs. Gould's sunbird is a small sunbird. It has a down-curved and pointed beak, typical for a nectar feeder. The iris of the eye is usually deep brown, and the tarsus is black. The male Mrs. Gould's sunbird is bright and colourful. The forehead to crown, supercilium and throat of the sunbird are deep violet.
The iris is generally reddish in color. In the Western Ghats, it can overlap in some areas with the crimson-backed sunbird but the male of that species has reddish upperparts, a broader breast band and generally darker eyes. The female has a white throat followed by yellowish breast. The upperside is olive or brownish.