Olivasrild
| Olivasrild | ||||||||||||
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Olivasrild |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Amandava formosa | ||||||||||||
| ( Latham , 1790) |
The olivastrild , also known as the olive-green astrild , the beautiful finch or the green tiger finch ( Amandava formosa , Syn . : Stictospiza formosa ), is an Asian species from the family of the magnificent finches . It is native to the western part of India. No subspecies are distinguished for this species. The IUCN classifies the Olivastrild as endangered because of its relatively limited range and the rapidly decreasing population as a result of the bird trade, but also because of the severe destruction of its habitat .
description
The Olivasrild reaches a body length of nine to ten centimeters and is accordingly one of the rather small species of finch. The upper body is a gloomy gray-green. The flanks have a black and white pattern. The throat and front chest are pale yellowish. The belly and the under tail-coverts are bright yellow. The beak is crimson. The eyes are brown and the feet are brownish gray to brownish flesh-colored.
Males and females can hardly be distinguished from one another. In the female, however, all colors are a little paler. This also applies to the black of the flank markings, which is where the sexes can most clearly be distinguished. In the female, the throat is also only greyish-white.
The juveniles are a paler or dull version of the adult male. The upper side of the body is olive gray, but the underside of the body is not as bright yellow as in the male and is often overlaid with a grayish tinge. The transverse corrugation on the flanks is paler and not very pronounced.
Distribution area and habitat
The Olivasrild is a species of Indian finch. Its range in India is fragmentary. It occurs in interior and north India from south Rajasthan to Maharashtra and in the east from Madhya Pradesh to Andhra Pradesh and possibly also to Bihar . Outside of this distribution area, it has also been observed in Lucknow and Lahore , but these may be prisoner refugees. The oliva pest is no longer on the list of birds in Pakistan. It is represented differently in this area of distribution. In some places it is a rare bird, but in other regions it is a common one.
Its habitat are reed belts and grasslands as well as bushland. It has also opened up human settlement space and occurs in the cultivated land mainly in sugar cane plantations but also in mango plantations.
Way of life
Little research has been done into the way of life of the Olivas deer. It is believed that grass seeds are its main food.
The breeding season varies depending on the distribution area. In the Raipur area in southeast Madhya Pradesh they breed from October to January. At Sangor further north, however, breeding birds were found in July. It is therefore believed that the olivas breed both during the winter dry season and during the monsoons.
The nest is built in thick bushes. It consists of coarse grass and reeds. The nests of several pairs are often found closer together. The clutch usually consists of four to five eggs. These are incubated by both parent birds for 13 to 14 days. The nestling period is 21 to 26 days.
Keeping as an ornamental bird
The olivas have been a cage bird in their Indian homeland for a very long time. It was introduced to England for the first time in 1863 and to Germany for the first time in 1873 by Carl Hagenbeck .
The olivastrild is kept relatively seldom in Europe because it is relatively seldom imported. A self-sustaining population through breeding successes of European keepers has not yet been achieved. Its breeding is more successful in the aviary than in a cage, but is generally considered difficult. Under natural conditions, the parent birds first give their young mostly small live food. This has to be collected in Europe as so-called meadow plankton.
supporting documents
literature
- Horst Bielfeld : Knowing and caring for 300 ornamental birds. Ulmer Verlag, Stuttgart 2009, ISBN 978-3-8001-5737-2 .
- Peter Clement , Alan Harris, John Davis: Finches and Sparrows. An Identification Guide. Christopher Helm, London 1993, ISBN 0-7136-8017-2 .
- 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
- ↑ BirdLife Factsheet , accessed June 19, 2010
- ↑ Clement et al., P. 380
- ↑ Clement et al., P. 381
- ↑ Nicolai et al., P. 288
- ↑ Bielfeld, p. 58
Web link
- Amandava formosa inthe IUCN 2013 Red List of Threatened Species . Listed by: BirdLife International, 2012. Retrieved November 24, 2013.