Ave del Paraíso Festoneada

Identificación

The paradise riflebird is a medium-sized bird, with males averaging about 30 cm (11.8 in) in height and weighing on average 134 to 155 g (4.7 to 5.5 oz). Females are slightly smaller, averaging at 29 cm (11.4 in) and weighing on average 86 to 112 g (3.0 to 3.9 oz). Both genders have a long, black, decurved bill, black legs, and dark brown iris.<p>The species is sexually dimorphic, with few similarities in plumage between males and females. The adult male is black with an iridescent greenish blue crown, throat, and central tail feathers, as well as iridescent green on the lower breast and flank. The central tail feathers are shortened, giving an appearance of blue over black along the tail. It has been suggested that some of the male's feathers are super black feathers. These feathers have been modified so that their barbules structurally absorb light, unlike normal black feathers, which emphasizes a darker appearance. These specialized feathers are found adjacent to brightly colored patches, suggesting that they help create optical illusions during courtship displays by exaggerating the bright colors they are juxtaposed to.<p>The adult female is gray-brown, with rufous coloration on the primary and secondary wing feathers, save for a white streak on the supercilium, white throat, and lighter brown with a barred pattern running down the breast, flanks, and belly. Compared to the male, the adult female has a notably longer, more decurved bill.<p>There has been little record of juvenile appearance. Juveniles of both genders resemble the adult female, with gray-brown feathers.<p>Like the Victoria's riflebird and the growling riflebird, the paradise riflebird has a growling voice. The male is known for its powerful “yaassss” call, often repeated once at a time and lasting around 2 seconds.

Taxonomía

The paradise riflebird was formally described in 1825 by the English naturalist William Swainson under the current binomial name Ptiloris paradiseus. It is one of the four riflebird species that are now placed in the genus Ptiloris. The common name "riflebird" comes from the likeness of their black velvety plumage to the uniform of the British Army Rifle Brigade.<p>There are no recognised subspecies of the paradise riflebird. It is similar in appearance to the other riflebird species, with males having similar iridescent blue-green patches and females appearing gray-brown with barred-patterned underparts.

Nombre científico

Ptiloris paradiseus

Autoridad

Swainson, 1825

Orden

Passeriformes

Familia

Paradisáidos

Género

Ptiloris

Distribución y hábitat

The paradise riflebird is endemic to eastern Australia, from New South Wales to Queensland, where it inhabits rainforests. It resides in the rainforest canopy, above 500 m (1640 ft) in elevation, though has been known to move to lower elevations, sometimes below 200 m (656 ft), in winter. It is primarily a sedentary species with a low population density. However, it has been known to migrate locally, moving from wet rainforests to nearby sclerophyll forests.

Migración

Especie residente

Comportamiento

Patrón migratorio: Especie residente.

Conservación

Tendencia poblacional: en declive.

Tendencia poblacional

en declive