The yellow-bellied sunbird-asity (''Neodrepanis hypoxantha'') is a small species of passerine bird from the

asity The asities are a family of birds, Philepittidae, that are endemic to Madagascar. The asities consist of four species in two genera. The ''Neodrepanis'' species are known as sunbird-asities and were formerly known as false sunbirds.del Hoyo, J. ...

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

. The male has black upper parts with a bluish sheen and yellow underparts, and is sometimes known simply as the yellow-bellied asity. It is found only in montane rainforests of Madagascar where it feeds on nectar that it sips from flowers, defending a good nectar source from other nectar-feeding birds. It is listed by the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of nat ...

as " vulnerable" due to the

diminution In Western music and music theory, diminution (from Medieval Latin ''diminutio'', alteration of Latin ''deminutio'', decrease) has four distinct meanings. Diminution may be a form of embellishment in which a long note is divided into a series ...

and fragmentation of its forest habitat.

Description

The plumage of male yellow-bellied sunbird-asities is very bright, with clean yellow undersides and dark black upper sides with an iridescent blue sheen; the females are duller. The eye is surrounded by a bright blue wattle which derives its colour, like the rest of the asities, from bundles of collagen. The bill is long and decurved, as it is adapted for nectar feeding.

Behaviour

This species is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to montane forest above 1600 m on the island of

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...

. Yellow-bellied sunbird-asities are active nectar feeders. They will aggressively defend a nectar source from rivals of the same species as well as from

sunbird Sunbirds and spiderhunters make up the family Nectariniidae of passerine birds. They are small, slender passerines from the Old World, usually with downward-curved bills. Many are brightly coloured, often with iridescent feathers, particularly ...

s. The yellow-bellied sunbird-asity is listed as vulnerable by BirdLife International and the IUCN. It was once considered to be an endangered species, and even possibly extinct; however, this was due to a lack of

ornithological Ornithology is a branch of zoology that concerns the "methodological study and consequent knowledge of birds with all that relates to them." Several aspects of ornithology differ from related disciplines, due partly to the high visibility and th ...

surveys in its high-altitude range. Subsequent research has found it to be more abundant than previously suspected, although it is still considered threatened due to

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

and fragmentation.

References

* BirdLife International (2007
Species factsheet: ''Neodrepanis hypoxantha''
Downloaded from http://www.birdlife.org on 16/6/2007 * Hawkins, F. (2003) Family Philepittidae (Asities) pp 94–105 in del Hoyo J., Elliott A. & Christie D.A. (2003) '' Handbook of the Birds of the World. Volume 8. Broadbills to Tapaculos'' Lynx Edicions, Barcelona

External links

BirdLife Species Factsheet.
{{DEFAULTSORT:sunbird-asity, yellow-bellied yellow-bellied sunbird-asity yellow-bellied sunbird-asity