Tuesday, 15 April 2014

Red-collared widowbird - for the love of birds

The Red-collared Widowbird (Euplectes ardens) is a species of bird in the Ploecaidae  family.Red-collared widow birds are found in grasslands and bush clearings in Eastern and Southern Africa. They are known for their long tails and brilliant red badges, both which act as sexual ornaments. They are often associated with other Widowbird and Bishop species. Birds in the highlands of Kenya have the red on the chest extending on to the nape and crown.

They are polygamous, where males acquisition of territory is an important determinant in their access to mates.They feed on seeds of sorghum and other grass seeds. They also feed on nectar, small berries, and insects, specifically ants, caterpillars, and termites.

During non-breeding seasons, the male plumage is brown, while in breeding season, October to April, they have black plumage with a long tail, approximately 22 cm, and crescent –shaped carotenoid based chest patch. There is significant variation in brightness, hue, and chroma of the carotenoid badges.

In contrast, females and sub adults, like non breeding males, are streaky dull brown with a short tail, approximately 4 cm. Non breeding males, however, retain their black tails, while females and sub adults’ tails are dark-brown. The tails and plumage are the bird’s sexual ornaments. Interestingly, although the males have a brilliant red collar in breeding plumage, females choose their mates based solely by tail length, not on the intensity of the red neck collar.

Males typically construct several nests by weaving grasses into a ball-like structure that dangles from the underside of thin tree branches, and entice the females into breeding with them based on her assessment the quality of his work.However, the females build and position the actual nests.

Typical of polygynous species, male red-collared widowbirds do not provide parental care. In fact, the only resources males provide are potential nest sites in their territories.
spotted at Dedan Kimathi University conservancy

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