Yellow-browed arassari

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Yellow-browed arassari
Yellow-browed Toucanet.jpg

Yellow- browed macaws ( Aulacorhynchus huallagae )

Systematics
Class : Birds (aves)
Order : Woodpecker birds (Piciformes)
Family : Toucans (Ramphastidae)
Genre : Green macaws ( Aulacorhynchus )
Type : Yellow-browed arassari
Scientific name
Aulacorhynchus huallagae
Carriker , 1933

The yellow- browed arassari ( Aulacorhynchus huallagae ) is a rare species of bird in the toucan family. It occurs only in a small area in Peru.

The IUCN classifies the yellow-browed macaw as critically endangered ( endangered ). The range of this species is very small and coca growers have settled in the area , so it can be assumed that the area that offers the yellow-browed macaws a suitable habitat is shrinking. The IUCN estimates the population at 1000 to a maximum of 2500 sexually mature individuals.

Appearance

The body length of adult yellow-browed macaws is 37 to 41 centimeters. Adult males of the yellow-browed macaw have a wing length between 14.3 and 14.8 centimeters. The tail has a length of 15.8 to 16.4 centimeters. The beak length is between 9.9 and 10.1 centimeters. Females have a similar plumage to the males, but their beaks are about 8.4 centimeters in length, but slightly shorter than the males.

Adult yellow-browed macaws are predominantly green pinnate. The upper side of the body has a bronze-colored sheen, which is particularly pronounced on the forehead, the crown, the back and the wing covers. The back and the wings, on the other hand, are washed over blue. The upper side of the body is a little pale, the face and the flanks are slightly yellowish green. The region above the eye is yellow, the trunk is red, and a blue band runs across the lower half of the chest. The ear covers and the nape of the neck are washed over blue. The belly is pale greenish white, the under tail-coverts are golden yellow.

The beak is long in relation to the body size, the lower bill is straight, the upper beak is slightly curved and tapering into a hook. The beak is predominantly blackish to blue-gray. Some individuals have a vertical white stripe at the base of their beak that runs across their upper and lower bills. The beak brightens slightly towards the tip and turns yellow-white. The eye is red to dark red or reddish brown. The feet and legs are light yellowish-blue to gray.

There is a possibility of confusion with the leek and gray-beaked macaroni . The yellow-browed macaw can be distinguished from the gray-beaked macaw by its yellow under-tail covers. The Laucharassari has a predominantly lower elevation than the yellow-browed macaw.

Distribution area, habitat and way of life

The yellow -browed arassari has so far only been observed in two locations around 90 kilometers apart in northern Peru, namely in the Río Abiseo National Park in the Department of San Martín and in the southeast of the La Libertad region . The previous locations are between 2,125 and 2,510 meters above sea level. Efforts to detect the yellow-browed arassari in other places have so far been in vain.

The habitat of the yellow-browed macaw are cloud forests. They prefer to stay in the tops of trees that reach a height of six to 15 meters. The dominant tree species come from the genus Clusia . The region is also characterized by a rich epiphyte growth and dense undergrowth. Yellow-browed macaws have been observed individually, in pairs and in small groups of up to four individuals. The feeding habits of this species have hardly been studied. Stomach examinations of three birds found fruits and seeds about four millimeters in size. Presumably, however, insects and small vertebrates also belong to the food spectrum of this species.

So far nothing is known about the reproductive behavior, a breeding spot has been detected in one male . According to current knowledge, the breeding season falls in the period from October to February or March.

supporting documents

literature

  • Werner Lantermann: Toucans and Arassaris. Filander Verlag, Fürth 2002, ISBN 3-930831-46-5
  • Lester L. Short and Jennifer FM Horne: Toucans, Barbets and Honeyguides - Ramphastidae, Capitonidae and Indicatoridae . Oxford University Press, Oxford 2001, ISBN 0-19-854666-1

Web links

Commons : Yellow- browed macaws ( Aulacorhynchus huallagae )  - Collection of images, videos and audio files

Single receipts

  1. ↑ BirdLife factsheet on the yellow-browed macaw , accessed December 29, 2012.
  2. ↑ Lantermann, p. 116.
  3. ↑ Short et al., P. 338.
  4. ↑ a b Short et al., P. 339.
  5. ^ Lantermann, p. 117.