Black-coat lazy bird

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Black-coat lazy bird
Nystalus obamai.jpg

Black Mantled Lazy Bird ( Nystalus obamai )

Systematics
Class : Birds (aves)
Order : Woodpecker birds (Piciformes)
Subordination : Gloss avian (Galbuloidea)
Family : Rotten birds (Bucconidae)
Genre : Nystalus
Type : Black-coat lazy bird
Scientific name
Nystalus obamai
Whitney , Piacentini , Schunck , Aleixo , De Sousa , Silveira & Rego , 2013

The black- coat lazy bird ( Nystalus obamai ), also known as the Obama lazy-lazy bird, is a species of bird from the family of the lazy birds (Bucconidae). The art epithet honors former US President Barack Obama for his support for the exit from coal-based energy generation.

features

The black-coat lazy bird reaches a total length of 13.8 to 21 cm and a weight of 43 to 47 g. The cheek patch, chin and upper throat are white. The sides of the head are yellowish brown and the stripe above the eyes is finely dotted with dark lines. The skull is reddish and dark brown banded and spotted. Towards the neck, the color becomes almost black. The back neck band is distinctly yellow-brown, the upper coat is blackish. The rest of the upper side is dark brown with yellow-reddish-brown spots that can be seen as bandages towards the back. The medium-long, narrow, somewhat stepped tail is blackish brown with fine reddish bands. The lower throat is ocher with fine blackish dashes. The chest and flanks are lighter, but more streaked. The middle underside is whitish and almost not dashed. The under tail-coverts are more yellowish brown. The iris is looser. The legs are brown, the feet dark yellow-olive. The beak is yellow-olive, with a very variable black-brown tip and base of the lower mandible.

Vocalizations

The intermittent singing (usually in a duet) is a low, sad whistle that sounds like whip, whi-wheeu, wheeeeeeuu , with a pronounced sequence of notes that first rise and then fall again after a short pause. The first, longer part of the chant is divided into 3–4 syllables, of which the first two or three can be very short. The chant typically sounds just after dawn or just before dusk on sunny mornings. Often the male starts, followed quickly by the female, whose song is a little deeper.

Systematics

Nystalus obamai was split off from Nystalus striatus in 2013 and described as a new species after peculiarities of the western populations of Nystalus striatus striatus were identified. Decisive for the recognition of Nystalus obamai as an independent species (including by the South American Classification Committee and the International Ornithologists' Union ) were, among other things, the differences in the vocalizations, the genetic distance and morphological differences. However, not all authors (including the HBW and BirdLife Illustrated Cheklist of the Birds of the World (2014) and the IUCN) are of the opinion that the described differences guarantee the independent species status and have therefore retained N. obamai as a subspecies of N. striatus .

distribution

The distribution area of ​​the black-coat sloth bird stretches from the western Amazonia in southern Colombia over Bolivia and to the east, south of the Amazon to Brazil west of the Rio Madeira.

habitat

The black-mantled lazy bird inhabits the canopy and lower layer of trees and forest edges of tropical, humid lowland rainforests, terra-firme forests and swamp forests, transitional forests, secondary forests, and forest clearings usually near bodies of water. Further habitats are foothills forests at altitudes of 1325 m in Colombia, 1700 m in Ecuador, up to 1200 m in eastern Peru and 1850 m in Bolivia.

Eating behavior

The documented prey animals include grasshoppers (Orthoptera), cicadas (Homoptera), dragonflies (Odonata), fishing horrors (Mantodea), caterpillars , leaf beetles (Chrysomelidae) and other arthropods up to approx. 8 cm in length, but also small vertebrates such as lizards (e.g. B. dwarf tea of the genus Anadia ). Large prey are beaten against a branch or twig in the seat guard before being eaten . The hide hunt starts from the canopy or sometimes from the middle level of the tree, occasionally even from the edges of the road, with lateral picking flights of approx. 3 to 8 m when catching prey. The pairs usually stay close to each other, but are sometimes about 100 m apart.

literature

Individual evidence

  1. ^ David Brewer: Birds new to Science. Fifty Years of Avian Discoveries. Christopher Helm, London 2018, ISBN 978-1-4729-0628-1 , pp. 129–130
  2. ↑ Proposal 617 to South American Classification Committee: Recognize newly described Nystalus obamai and split Nystalus striolatus into two species
  3. ^ IOC World Bird List Proposed Splits / Lumps