Sangihedickkopf
| Sangihedickkopf | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Coracornis sanghirensis | ||||||||||||
| ( Oustalet , 1881) |
The Sangihedickkopf ( Coracornis sanghirensis ), formerly known as the Sangihepitohui , is a rare songbird that is endemic to the Indonesian Sangihe Islands . It is classified differently into the stubborn family (Pachycephalidae) or into its own family Colluricinclidae. It was originally assigned to the genus Colluricincla , but has been assigned to the genus Coracornis since 2013 .
The IUCN classifies the population of the Sangihedickkopf as critically endangered . No subspecies are distinguished.
description
The Sangihedickkopf reaches a length of 17 to 19 centimeters and a weight of 36 grams. The sexes look the same. The top is olive gray. The head is a little darker than the top. The ear covers are dark brown with light tan streaks. The flight feathers are brown with dark brown inner flags. The small upper wing-coverts are brown. The tail is brown, the inner flags of the control feathers are dark brown. The underside is light gray with a light tan tinge. The belly is greenish yellow. The flanks and under tail-coverts are darker. The iris is dark gray. The upper bill is dark gray horn-colored, the lower bill is light horn-colored. The young birds have not yet been described. The loud singing is similar to that of the drongos and consists of ten-second phrases that are repeated many times. Occasionally a chweep chweep can be heard.
Habitat and occurrence
The Sangihedickkopf is limited to forest fragments on Gunung Sahendaruman and Gunung Sahengbalira on the main island of Sangihe Besar. It inhabits primary mountain forests and secondary forests that are more than 30 years old at altitudes of 575 to 1000 m.
Way of life
The Sangihedickkopf searches for food in the middle and lower tree layers as well as in the dense rattan undergrowth. Occasionally he can be seen on the floor. It feeds on insects. Nothing is known about its breeding biology.
status
For a long time, the Sangihedickkopf was only known from a museum specimen from the 19th century until it was rediscovered on Gunung Sahendaruman in 1995. While the population was estimated to be 640 in 1995, since another expedition in 1998/1999 a population of less than 100 has been assumed. The original forest has been almost completely converted into agricultural land. The largest forest fragment in which the species has been observed has an area of 225 to 340 ha and is also threatened by agricultural change.
literature
- J. Del Hoyo, A. Elliot, D. Christie (Eds.): Handbook of the Birds of the World. Volume 12: Picathartes to Tits and Chickadees . Lynx Edicions, 2006, ISBN 84-96553-42-6 .
- The taxonomic and conservation status of Pinarolestes sanghirensis Oustalet 1881. (PDF full text; 404 KB)
- The Howard and Moore Complete Checklist of the Birds of the World. Princeton University Press. (For the classification of the genera Colluricincla and Pitohui into the family Colluricinclidae)
- Ernst Mayr , James Lee Peters : Check-list of Birds of the World. (For the classification of the genera Colluricincla and Pitohui into the family Pachycephalidae)
Web links
- Coracornis sanghirensis inthe IUCN Red List of Threatened Species 2017.1. Listed by: BirdLife International, 2016. Retrieved July 4, 2017.
- BirdLife International: Species Factsheet - Coracornis sanghirensis
- Hokkaido Birdbase: Summary of the available data; engl. pdf (300 kB)
- Photos at the Oriental Bird Club
Single receipts
- ↑ Taxonomy 3.1-3.5 «IOC World Bird List ( en-US )
- ↑ Handbook of the Birds of the World zum Sangihedickkopf , accessed on July 4, 2017