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Species of bird From Wikipedia, the free encyclopedia
The club-winged manakin (Machaeropterus deliciosus) is a small passerine bird which is a resident breeding species in the cloud forest on the western slopes of the Andes Mountains of Colombia and northwestern Ecuador. The manakins are a family (Pipridae) of small bird species of subtropical and tropical Central and South America.
| Club-winged Manakin | |
|---|---|
| |
| Male in NW Ecuador | |
| call recorded in Ecuador | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Pipridae |
| Genus: | Machaeropterus |
| Species: | M. deliciosus |
| Binomial name | |
| Machaeropterus deliciosus (Sclater, PL, 1860) | |
 | |
Like several other manakins, the club-winged manakin produces a mechanical sound with its extremely modified secondary remiges, an effect known as sonation.[4] The manakins adapted their wings in this odd way as a result of sexual selection.[2] In manakins, the males have evolved adaptations to suit the females' attraction towards sound. Wing sounds in various manakin lineages have evolved independently. Some species pop like a firecracker, and there are a couple that make whooshing noises in flight. The club-winged manakin has the unique ability to produce musical sounds with its wings.[5]
Each wing of the club-winged manakin has one feather with a series of at least seven ridges along its central vane. Next to the strangely ridged feather is another feather with a stiff, curved tip. When the bird raises its wings over its back, it shakes them back and forth over 100 times a second (hummingbirds typically flap their wings only 50 times a second). Each time it hits a ridge, the tip produces a sound. The tip strikes each ridge twice: once as the feathers collide, and once as they move apart again. This raking movement allows a wing to produce 14 sounds during each shake. By shaking its wings 100 times a second, the club-winged manakin can produce around 1,400 single sounds during that time.[5] In order to withstand the repeated beating of its wings together, the club-winged manakin has evolved solid wing bones (by comparison, the bones of most birds are hollow, making flight easier). The solid wing bones, a result of sexual selection, are also present in female manakins, who do not benefit from the trait.[6]
While this "spoon-and-washboard" anatomy is a well-known sound-producing apparatus in insects (see stridulation), it had not been well documented in vertebrates (some snakes stridulate too, but they do not have dedicated anatomical features for it).
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