Schoutedenapus
| Schoutedenapus | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||
|
||||||||||
| Scientific name | ||||||||||
| Schoutedenapus | ||||||||||
| De Roo , 1968 |
Schoutedenapus is a genus of birdsinthe sailor family (Apodidae). The two representatives of thegenus endemic to Africalook very similar to the Apus species. Both Schoutedenapus species are probably resident birds . The species are among the rarest among sailors, the Schoutedensegler is only known from five examined individuals and has never been observed in the field.
features
They are medium-sized sailors with a body length of approximately 16.5 centimeters. Both species have very uniform gray or black-brown plumage. The wings are long, from the arm wings the wing tips are very pointed. The tail is forked deep, the tail is often kept closed in flight. The degree of indentation of the outer control spring is an indicator for determining the age. The toes are arranged anisodactyl .
The mouse swift often forms large swarms and gives off a noticeable ticking, metallic-sounding call.
Systematics
Due to their external similarity, the two species of this genus were originally assigned to the genus Apus . Due to their different toe arrangement - anisodactyl instead of pamprodactyl as with the other Apus species - De Roo 1968 placed the species in a separate genus. The assignment of this genus is difficult due to contradicting characteristics, so an assignment to the subfamily Cypselodinae was considered in addition to the assignment to the Apondini tribe . The sound utterances of the mouse swift, in turn, are similar to the click sounds of the echolocating salangans , so that the genus Schoutedenapus is currently usually assigned to them.
The following species are included in the genus:
- Mouse Segler ( schoutedenapus myoptilus )
- Schouteden's sailor ( Schoutedenapus schoutedeni )
literature
- Phil Chantler, Gerald Driessens: A Guide to the Swifts and Tree Swifts of the World . Pica Press, Mountfield 2000, ISBN 1-873403-83-6
Individual evidence
- ↑ Chantler, Driessens: A Guide to the Swifts and Tree Swifts of the World . Page 24, see literature
Web links
- Schoutedenapus on the IUCN Red List of Threatened Species.