Kastanientinamu
| Kastanientinamu | ||||||||||||
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Chestnut Sinamu ( Crypturellus obsoletus ) |
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| Scientific name | ||||||||||||
| Crypturellus obsoletus | ||||||||||||
| ( Temminck , 1815) |
The Brown Tinamou ( Crypturellus obsoletus ) is a large parts of South America very common type of Tinamous .
features
Chestnut sinamus grow to be 25 to 30 cm long, female birds 395 to 540 g, males between 350 and 480 g. The plumage is predominantly dark brown, the underside lighter in color and darkly banded above the legs. Head and neck are gray-brown, throat gray. The iris is orange in color, the legs are greenish. Young birds are similar to adult birds but have black dots on their backs and sometimes also on their wings. Females are often lighter.
distribution
The distribution area extends in the southeast of Brazil from Bahia to Rio Grande do Sul , includes the east of Paraguay and Argentina as well as parts of Venezuela , Ecuador , Peru and Bolivia . Forest edges and clearings are preferred habitats. Kastanientinamus live in low to middle altitudes, in the Andes up to altitudes of 2200 meters, in southeastern Peru and in Bolivia, exceptionally, also up to altitudes of 2900 meters.
Chestnut tinamus are among the most common cockroaches in some regions. They have become extremely common in southeastern Brazil and have probably benefited from the decline in the populations of other cocoon species, especially the gray- tipped tinamu ( Tinamus solitarius ). In contrast, the Kastanientinamu has been exterminated in Colombia .
Subspecies
Nine subspecies have been described, which can be differentiated in size and color. The C. obsoletus traylori , which is pure black on top, could also be a species of its own.
- C. obsoletus obsoletus , the nominate form , southeastern Brazil, eastern Paraguay, northeastern Argentina.
- C. obsoletus castaneus , eastern and central Colombia and eastern Ecuador, northern Peru.
- C. obsoletus ochraceiventris , Central Peru.
- C. obsoletus traylori , southeastern Peru.
- C. obsoletus punensis , southeastern Peru, northern Bolivia.
- C. obsoletus cerviniventris , northern Venezuela.
- C. obsoletus knoxi , northwestern Venezuela.
- C. obsoletus griseiventris , north and center of Brazil.
- C. obsoletus hypochraceus , southwestern Brazil.
Way of life
Kastanientinamus feed mainly on seeds of the laurel family , milkweed family and rhombus family . They follow the trains of the wandering ants to catch the insects that try to escape the wandering ants. They turn leaves on the forest floor to catch the insects hidden underneath.
They breed in the southeast of Brazil from September to November, in the southeast of Peru in October. The nest is built at the base of trees. The four to five eggs are dark pink, dark red or chocolate colored, depending on the subspecies. They are incubated for about 19 days. The chicks have a dark top of the head.
literature
- Josep del Hoyo et al .: Handbook of the Birds of the World. Volume 1: Ostrich to Ducks. Lynx Edicions, 1992, ISBN 84-87334-10-5 .
Web links
- Crypturellus obsoletus in the endangered Red List species the IUCN 2008. Posted by: BirdLife International, 2008. Accessed January 30 of 2009.
- Videos, photos and sound recordings on Crypturellus obsoletus in the Internet Bird Collection