Black-billed Sicklebill

The black-billed sicklebill (''Drepanornis albertisi''), also known as the buff-tailed sicklebill (leading to easy confusion with the hummingbird of the same name), is a species of bird-of-paradise. It, along with its congener, are the only members of the genus ''Drepanornis.''

Conservation status

Widespread throughout its large range, the black-billed sicklebill is evaluated as being of least concern on the IUCN Red List of Threatened Species. It is listed on Appendix II of CITES.

Etymology

The generic name ''Drepanornis'' consists of the words ''Drepane'' for "sickle" and ''ornis'' for "bird", so the genus name literally means "sickle bird", referring to their sickle-shaped bill; the specific name commemorates the Italian naturalist Luigi Maria d'Albertis, who discovered this species in 1872. The race ''cervinicauda'' subspecific name consists of ''cervinus'' for "stag-colored" and "''cauda"'' for tail, ''geisleri'' honors Bruno Geisler, a German ornithologist who described this subspecies, and ''inversus'' means "overturned".

Subspecies and taxonomy

Though they share similar features and the same English name, the ''Drepanornis'' sicklebills are only distantly related to the ''Epimachus'' sicklebills. In fact, they are more closely allied with the twelve-wired and standardwing birds-of-paradise. There are two agreeable subspecies, though races ''geisleri'' from the Huon Peninsula and ''inversus'' from the Weyland mountains and nearby highlands require more detail to be considered valid subspecies or not.

*''Drepanornis albertisi albertisi '' ( Sclater, 1873)
*''Drepanornis albertisi cervinicauda'' ( Sclater, 1884)

Description

The black-billed sicklebill is medium-sized, about 35 cm long, brown. The male has a bare maroon-grey skin around its eye, buff-colored tail, dark-brown iris, yellow mouth and black sickle-like bill. It is adorned with dark, horn-like forecrown feathers, an erectile fan-like bronze neck plumes and elongated purple-tipped flank plumes. The unadorned brown female is smaller, with bill longer than male and dark-barred below.

Biology

Its diet consists mainly of fruit and arthropods. The female lays one to two pale cream eggs with brown and grey spots.

Distribution

The black-billed sicklebill is found in mountainous areas with a scattered range of presence across western, central and eastern New Guinea. The species is mostly distributed in tropical montane forests at altitudes of 1100 to 1900 m above sea level. It overlaps with '' Drepanornis brujini'' only barely, but no hybridization has ever been recorded, though it is possible to occur.

Gallery

File:Naturalis Biodiversity Center - RMNH.AVES.140696 1 - Drepanornis albertisi cervinicauda Sclater, 1883 - Paradisaeidae - bird skin specimen.jpeg, Race ''cervinicauda'' male specimen at the Naturalis Biodiversity Center.
File:Naturalis Biodiversity Center - RMNH.AVES.140692 1 - Drepanornis albertisi albertisi (Sclater, 1873) - Paradisaeidae - bird skin specimen.jpeg, Nominate female specimen.
File:Drepanornis albertisi - The Birds of New Guinea.jpg, Early preconception of ''Drepanornis albertisi''. Male front, female to the left.
File:Drepanornis cervinicauda - The Birds of New Guinea.jpg, Another early illustration of ''Drepanornis albertisi.''
File:Naturalis Biodiversity Center - RMNH.AVES.140697 2 - Drepanornis albertisi cervinicauda Sclater, 1883 - Paradisaeidae - bird skin specimen.jpeg, Race ''cervinicauda'' male specimen with upper pectoral feathers partially expanded.

References

External links

BirdLife Species Factsheet

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black-billed sicklebill
Birds of New Guinea
black-billed sicklebill
black-billed sicklebill