Hillstar
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The hillstars are hummingbirds of the genus Oreotrochilus. They are native to the Andes in South America.
The Urochroa hillstars are not closely related.
Species list
Their genus contains seven species:[1] Template:Species table
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Description
The birds are approximately Script error: No such module "convert". in length with fairly long, slightly decurved black bills. They are sexually dimorphic. The male usually has an iridescent green throat, or bluish-purple in the Ecuadorian hillstar, with dull greenish upperparts and pale flanks. The central underparts are usually black, but are brown in the Andean hillstar. The tail is usually dark with a contrasting white pattern; the pattern is cinnamon in the wedge-tailed hillstar, and the tail is entirely dark in the black-breasted hillstar. The female is duller, with a whitish throat densely spotted with green, white, buff, or cinnamon underparts, and a dark tail with a white pattern.
Behaviour
These highly territorial hummingbirds are found in temperate and alpine grassland, scrub and woodland at altitudes of Script error: No such module "convert".. The Ecuadorian hillstar has been observed nesting at high altitudes on the cliffs of Cotopaxi.[2] This species is known to nest colonially.[3]
Many hillstars feed mainly on shrubs of the Andean plant genus Chuquiraga, and some species may be limited to them.[4]
The genus has undergone allopatric speciation.
References
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- ↑ Script error: No such module "citation/CS1".
- ↑ Smith, G. T. (1969). A high altitude hummingbird on the volcano Cotopaxi. Ibis 111(1), 17-22.
- ↑ Solano-Ugalde, A. (2008). High in the Andes: Colonial nesting of Ecuadorean Hillstar (Oreotrochilus chimborazo: Trochilidae) under a bridge. Ornitología Colombiana 6, 86-88.
- ↑ Bleiweiss, R. (1982). The northern limit of the hummingbird genus Oreotrochilus in South America. The Auk 99(2), 376-78.
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Further reading
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- Fjeldså, J. and I. Heynen (1999). Genus Oreotrochilus. pp. 623–24 In: del Hoyo, J., et al. (eds.) Handbook of the Birds of the World. Vol. 5. Barn-owls to Hummingbirds. Lynx Edicions, Barcelona. 1999. Template:ISBN