Collared Woodpecker

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Collared Woodpecker
Systematics
Class : Birds (aves)
Order : Woodpecker birds (Piciformes)
Family : Woodpeckers (Picidae)
Subfamily : Real woodpeckers (Picinae)
Genre : Picus
Type : Collared Woodpecker
Scientific name
Picus rabieri
( Oustalet , 1898)

The collar Woodpecker ( Picus rabieri ) is a species of bird from the family of woodpeckers (Picidae). It is one of the least researched woodpeckers to date. As far as is known, the medium-sized species inhabits a relatively small area in Southeast Asia and inhabits the evergreen tropical rainforest, semi-evergreen forests and old mixed deciduous forests, whereby selectively thinned and heavily thinned forest areas are at least tolerated. There is hardly any information about the way of life, the food that is often sought low on trees and also regularly on the ground consists mainly of ants.

The species is considered to be infrequent to locally quite common. The population is probably declining moderately quickly due to the ongoing forest destruction, the collar woodpecker is therefore classified by the IUCN as a type of the warning list ("near threatened").

description

The collared woodpecker resembles the green woodpecker native to Central Europe in habit and with regard to the predominantly green plumage, but head and neck coloration differ greatly. They are medium-sized woodpeckers with an indistinct feather bonnet, a stiff, long tail and a relatively long, slightly chisel-shaped, pointed beak that is quite broad at the base. The upper beak is bent down at the ridge. The body length is about 30 cm, which makes them slightly smaller than a green woodpecker. No information is available on the weight. The species shows a clear sexual dimorphism in terms of coloration .

In males, the entire back, including the shoulder feathers, is bright dark green. The rump is only slightly lighter, the upper tail-coverts are green with dark lines on the shaft. The upper wing ceilings and the umbrella feathers are green with a bronze shade, occasionally also with a red shade. The wings are blackish brown, the arm wings have bronze-green or red-washed outer flags . All wings have wide white banded inside flags , the outside flags of the hand wings are also spotted white or narrow white banded. The top of the tail is blackish, the central control feathers show green edges. The lower chest and upper abdomen are green. The fletching of the flanks and lower abdomen shows dirty white shaft lines and indistinct white hems and tips on an olive green ground, creating a scale pattern. The under tail-coverts are olive-gray with olive-green hems and tips. The lower wings show gray-brown banding on a whitish background. The under-tail is blackish with strong green-yellow blurring, especially on the outer tail-feathers, the middle tail-feathers occasionally show narrow, light-colored bands.

The forehead, top and back of the head are red, the top of the head shows some blackish lines. The red color includes the sides of the head almost to the upper edge of the eyes, continues below the ear covers to the front, connects with the red streak of beard and extends to the upper chest. An indistinct and narrow whitish or whitish green eye stripe extends from the upper edge of the eye to just behind the eye. The ear covers and cheeks are dull light green, often with a few red feather tips or a red wash. The chin and throat are pale greenish and often dashed in white; the lower throat is red like the chest. The nape of the neck is green, with occasional red feather tips.

The bill is black or blackish gray, the base of the lower mandible is lighter greenish or yellowish green. Legs and toes are yellowish green or greenish gray. The iris is reddish brown or pinkish brown.

In the female, the forehead and skull are green, the top of the head is dashed black for this reason. The streak of beard is less red or even blackish, and the red color on the front and side neck is often less pronounced. Nothing is known about the intraspecific variability, so far no subspecies have been described.

Vocalizations

The calls are not yet described. The drum rolls are fast, irregular, and of medium length.

distribution and habitat

This species of woodpecker inhabits a relatively small area in Southeast Asia. The so far not exactly known distribution area includes at least the central and southern Laos as well as the central and northern Vietnam , an older record is available from the extreme south of the Chinese province of Yunnan . There is no information on the size of the total distribution area.

Collared woodpeckers inhabit the evergreen tropical rainforest, semi-evergreen forests and old mixed deciduous forests, whereby selectively thinned and heavily thinned forest areas are at least tolerated. The altitude distribution in Vietnam reaches up to 700 m.

Way of life

There is hardly any information about the way of life of the species. The food that is often looked for low on trees and also regularly on the ground probably consists mainly of ants. It is believed that breeding takes place between January and March, and young birds have been observed in northern Vietnam at the beginning of July. Further information on the breeding biology is not yet available.

Existence and endangerment

Information on the size of the world population is not available. The species is considered to be infrequent to locally quite common. The population is probably declining moderately quickly due to the ongoing forest destruction, the collar woodpecker is therefore classified by the IUCN as a type of the warning list ("near threatened").

swell

Individual evidence

  1. ↑ Hans Winkler, David A. Christie and David Nurney: Woodpeckers. A Guide to the Woodpeckers, Piculets, and Wrynecks of the World. Pica Press, Robertsbridge 1995: p. 368
  2. ↑ The Collared Woodpecker at BirdLife International (Online, accessed January 6, 2010)

literature

  • Hans Winkler , David A. Christie and David Nurney: Woodpeckers. A Guide to the Woodpeckers, Piculets, and Wrynecks of the World. Pica Press, Robertsbridge 1995, ISBN 0-395-72043-5 , pp. 148-149 and 368.

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