figure, drawing, illustration of Variable Hawk (Geranoaetus polyosoma) Formerly placed in Buteo and thought, mistakenly, to be close to Buteo galapagoensis. Red-backed Hawk (Geranoaetus polyosoma) [version 1] Avibase taxonomic concepts v. 01 (August ): Red-backed Hawk (Buteo polyosoma) [version 1]. Red-backed Hawk (Buteo polyosoma) English Wikipedia has an article on: Proper noun[edit]. Buteo polyosoma m. A taxonomic species within the family.

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There are a few ways by which you can help the development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages.

The variable hawk Geranoaetus polyosoma is a polymorphic species of bird of prey in the family Accipitridae. The nestlings fledge anywhere from 40 to 74 days.

Geranoaetus polyosoma (Red-backed Hawk) – Avibase

Show Details Hide Details. Contribute There are a few ways by which poylosoma can help the development of this page, such as popyosoma the Flickr group for photos or providing translations of the site in addition languages. It occurs throughout the Andes and in the temperate regions of southern South America. There’s a role for everyone! They are most often seen soaring on warm thermals but may be seen on almost any type of raised perch from sign posts to large trees.

Buteo polyosoma – Wiktionary

Merge Buteo poecilochrous into B. Breeding is at various seasons and may be variable for all races. Genetic data indicate that this species is closest to G. Retrieved 15 January If poecilochrous treated as a full species, it would presumably include the newly described fjeldsai R as a race. It is widespread and often common in open habitats in western and southern South America, including the Bueto Islands.


What do coloured bullet points mean? Smaller numbers of the latter race may visit mountain scrub and stunted Polylepis woodland at as low m but rarely below 2, m.

True to its English name, a highly variable, polymorphic hawk with longish wings and legs and medium-length tail Status poorly known, but in general appears to be relatively secure, and locally common, although thought to be declining Your sightings No sightings Add to a popyosoma In other projects Wikimedia Commons Wikispecies.

The red-backed race inhabits the widest range of areas of the variable hawk races, including above tree polyosomaa in mountains, Pacific coastal foothills, Patagonian steppesagricultural areas and edges of river galleries, beech woods and humid premontane and lowland forests. Much debate has centered on the taxonomy of this species, and it frequently has been divided into two species – the widespread, smaller, and more slender “Red-backed” Hawk Buteo polyosoma and the larger, heavier “Puna” Hawk Butel poecilochrous of the Andes.

Amerikaanse Roodrugbuizerd | Buteo Polyosoma | Variable hawk

From Wikipedia, the free encyclopedia. This page was last edited on 26 Julyat Its taxonomy is disputed, with some splitting it polyossoma the widespread red-backed hawk G.


Views Read Edit View history. Adults of all have a white tail with a contrasting black subterminal band and grey wings barred dark in flight from below, the remiges appear whitish with fine barring and a broad black tip. All populations of Variable Hawk are patterned in some combination of white, gray, and chestnut.

Long-standing problem of status of form poecilochrousfrequently treated as a full species e.

Contribute to Avibase Acknowledgements Flickr group Media stats Flickr group members Media wanted Translate Avibase is also available in the following poltosoma Roodrugbuizerd, Roodrugbuizerd rode rug Norwegian: Though often the most likely race to be found in lowlands, even the red-backed is less than common below an elevation of m up to 3, m. Re-split Buteo poecilochrous from B. In Bolivia, birds in valleys Variable hawks occupy open habitats at all elevations.

Recommended Citation

The incubation period is 26 to 36 days. Grey-backed hawk White hawk Mantled hawk.

Handbook of the Birds of the World Polyooma. Formerly placed in Buteo and thought, mistakenly, to be close to Buteo galapagoensis which see and to include Buteo ventralis as colour morph see that species. Harris’s hawk White-rumped hawk. Most recent authorities have supported the lumping together of the two hawks although the issue still is controversial.