Jackson's Berga deer
| Jackson's Berga deer | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Cryptospiza jacksoni | ||||||||||||
| Sharpe , 1902 |
Jackson's Bergastrild ( Cryptospiza jacksoni ) is a relatively little researched African species from the finch family . No subspecies are distinguished for this species.
description
Jackson's Bergastrild reaches a body length of twelve centimeters. The forehead, the front and middle parting and the sides of the head up to the ear region are carmine red in the males. The back of the head, the nape and the neck, on the other hand, are dark slate gray. The back, the rump and the upper tail covers are crimson. Carmine outer hems can also be found on the otherwise black wing cover feathers and inner arm wings. The underside of the body is also dark slate gray, with the throat being a little lighter. There is a crimson red spot on each of the rear flanks.
The Jackson's Bergastrild differs from other Berastrild by its gray head and its gray underside of the body. In the slate gray Astrild , the red body plumage is limited to the flanks and the rump. This species also has small white spots on the sides of the chest.
Distribution and way of life
The distribution area of Jackson's Bergastrild is limited to the mountain forests in the Western Rift , similar to Shelley's Bergastrild . Its height distribution ranges from 1,500 to 3,200 meters. In places it is common in its area of distribution. Similar to Reichenow's Bergastrild , its habitat is dense undergrowth of mountain forests. He also goes into clearings overgrown with grass and weeds to look for seeds. While foraging for food, it spends most of its time on the ground. They are shy birds that seek shelter in nearby thickets if they are disturbed.
The diet of Jackson's Bergastrild mainly consists of small seeds, mostly grass seeds, but also seeds from perennials such as spring herbs and ragweeds, as well as unusual cereal grains such as millet and maize. It also eats insects, especially small beetles. Small snails were also found in the stomach contents. It occurs predominantly in pairs or in small groups of five to six individuals.
So far only two nests of Jackson's Bergastrilden have been described. Both nests were 1.6 meters above the ground and were made of gray and moss or grass, feathers and animal hair. The clutch consists of two eggs. Jackson's Bergastrilde can probably brood all year round.
attitude
Jackson's Bergastrild has so far only been imported to Europe once. In the fall of 1960, a couple was introduced to England and a male to Switzerland. According to behavioral observations in captivity, courtship resembles that of Reichenow's Bergastrild .
supporting documents
literature
- C. Hilary Fry and Stuart Keith (Eds.): The Birds of Africa. Volume VII. Christopher Helm, London 2004, ISBN 0-7136-6531-9 .
- Jürgen Nicolai (Ed.), Joachim Steinbacher (Ed.), Renate van den Elzen, Gerhard Hofmann, Claudia Mettke-Hofmann: Prachtfinken - Afrika , Series Handbuch der Vogelpflege, Eugen Ulmer Verlag, Stuttgart 2007, ISBN 978-3-8001- 4964-3
Single receipts
Web link
- Cryptospiza jacksoni inthe IUCN 2013 Red List of Threatened Species . Listed by: BirdLife International, 2012. Retrieved February 5, 2014.