Black sicklebill


The black sicklebill is a large member of the birds of paradise family, Paradisaeidae. This species is found throughout most of central New Guinea and the Vogelkop region to the northwest in montane forests at altitudes from 1800 to 2150 m.

Etymology

The species' scientific name is Epimachus fastosus. Epimachus, its generic name, means "equipped for battle", referring to this genus' machine gun-sounding calls. Its specific name, fastosus, means "proud". For its subspecies, atratus means "black", ultimus means "final", and stresemanni honors the German naturalist, Erwin Stresemann.

Description

As being the second longest bird of paradise species, the black sicklebill measures about 110 cm in length if the tail is included, and around 24 inches without the tail. The female is around 21 inches in length. The black sicklebill is a very bizarre species of bird of paradise. The male has a black head with a long, silver, slightly downcurved bill, a bright yellow mouth, scarlet-red eyes which are surrounded by iridescent scaly feathers of typically blue-greenish color that cover most of the front of the face. The rest of the head, including the neck, is jet black. The back is jet black, but is mostly covered with iridescent scale-like feathers with metallic blue color, but can be concluded as greenish-blue in some lights. His wings are black with a less conspicuous bluish iridescence. The greatly exaggerated tail is jet black with a more visible blue iridescence, more notable at the center. On its underside, he has very soft, almost silky brownish-black plumage that ends in relatively elongated flank plumes that extend slightly past the tail, but these plumes are more pronounced in the Brown sicklebill. Typically hidden when perched, the males' most splendid ornaments are two glorious pectoral fans on each side of the breast. These large feathers are almost entirely black, but an outstanding feature is that each feather is intricately tipped iridescent blue-greenish. These fans are used in their courtship displays when they bring them up over their head to form an overall comet shape edged with a stroking narrow, blue line. The female, however, is generically unimpressive. She is an olive-light brown above with more of an orange-brown crown. She is creamy on the belly, which is covered with black barring. She still has a long tail, but not nearly as long as her male counterpart. She differs from the female brown sicklebill by her brown eyes vs. the white eyes of the latter species. The tail is a dull olive. Both sexes have grey-blackish legs and feet.

Call

have very un-birdly calls. The male of this species produces a powerful, far-carrying, bubbling "kwit-it kwit-it", a characteristic sound in its range. The true unusual call is found in the brown sicklebill. Listen to call .

Hybridization

In the wild, the bird has hybridised with the Arfak astrapia to create offspring that were once considered two distinct species, the Elliot's sicklebill and the Astrapian sicklebill. Both species are generally viewed by most mainstream ornithologists as hybrids, but a minority of ornithologists believe ellioti may be a valid species. There have also been records of hybrids with the Long-tailed paradigalla, Superb Bird-of-paradise and perhaps the Vogelkop Superb Bird-of-paradise.

Ecology and Behavior

Feeding

Black sicklebills, like many of their relatives, are primarily omnivorous, feeding on fruits, insects and other animal prey. Unlike most mostly frugivorous cousins, it tends to feed on both items at an equal proportion. It typically feeds solitarily, but mixed foraging flocks aren't abnormal.
. Note the pectoral fans, which are folded on this specimen.

Courtship and Breeding

Male black sicklebills display anywhere from September to October and February to April. Like nearly all members in Paradisaeidae, they are polygnous, mating with several females in a single season. The male chooses a pole-like, upstanding branch for his display. He may practice for days on end; once he's ready to display, he advertises with his loud call to attract a female. When a female lands on his pole, he fluffs up his pectoral fans to make a comet shape, leaning and bending horizontally. After his intro, he rises upward and perpendicular to the ground and repeatedly rubs the rachides of his flight feathers together to make woodpecker-like beating sounds, all while slowly orbiting around the female's inquisitive face. Once she's been impressed, the two birds copulate. The female tend to all parental duties; she builds the nest, cares for the eggs and chicks. However, as custom with the family, very little is known about the actual breeding process of this species.

Subspecies and Taxonomy

The Black sicklebill has been classified as Promerops fastuosus, and was first thought to be a species of sugarbird upon discovery; of course this was proved false and it now sits in the family Paradiseidae. The "long-tailed" sicklebills are actually not closely related to the "short-tailed" birds of the same genus, Drepanornis|; they in fact belong to a clade that includes the Paradigalla and Astrapia. Of course, its closest relative is the brown sicklebill. The black sicklebill has three subspecies:
With a population estimated around 2,000-10,000 individual birds, the habitat Due to ongoing habitat loss, small population size, and hunting in some areas for food and its tail feathers, the black sicklebill is declining in a relatively relevant portion of it distribution. It is classified as Least Concern on the IUCN Red List of Threatened Species, and is listed on Appendix II of CITES.