Coua
Couas are large, mostly terrestrial birds of the cuckoo family, endemic to the island of Madagascar.
Reminiscent of African turacos when walking along tree branches, they likewise feature brightly coloured bare skin around the eyes. Some resemble coucals in their habit of clambering through plant tangles while foraging, while the arboreal species move between tree canopies with gliding flight. Four species occur in rainforests while the remaining six are found in the dry forests of western and southern Madagascar.
They have large feet, with a reversible third toe like all cuckoos. Their long tibia suggest a relationship with the Carpococcyx ground-cuckoos of Asia, a genus with similar nestlings. Consequently, they are sometimes united in the subfamily Couinae. Couas build their own nests and lay white eggs. Couas' calls are short series of evenly spaced notes, which are sometimes answered by other individuals.
Taxonomy
The genus Coua was erected by the Swiss naturalist Heinrich Rudolf Schinz in 1821 with the giant coua as the type species. The name is from koa, the Malagasy word for the couas.Species
There are nine extant species placed in the genus:| Image | Scientific name | Common Name | Distribution |
| Coua cursor | Running coua | Madagascar. | |
| Coua gigas | Giant coua | western and southern Madagascar | |
| Coua coquereli | Coquerel's coua | Madagascar. | |
| Coua serriana | Red-breasted coua | Madagascar. | |
| Coua reynaudii | Red-fronted coua | Madagascar. | |
| Coua ruficeps | Red-capped coua | Madagascar. | |
| Coua cristata | Crested coua | Madagascar. | |
| Coua verreauxi | Verreaux's coua | Madagascar | |
| Coua caerulea | Blue coua | Madagascar. |
Fossils and Extinct species
- Ancient coua, Coua primaeva – prehistoric
- Bertha's coua, Coua berthae – only known from Holocene fossil remains
- Delalande's coua, or the snail-eating coua Coua delalandei – extinct