| 词条 | Andean hillstar |
| 释义 |
| name = Andean hillstar | image = Oreotrochilusestella2.jpg | image2 = Andean Hillstar (Oreotrochilus estella) perched.jpg | image2_caption = Male above, female below | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Oreotrochilus | species = estella | authority = d'Orbigny & Lafresnaye, 1838 | synonyms = | range_map = Oreotrochilus estella map.svg | range_map_caption = Combined distribution (green) of Andean and green-headed hillstars in South America }} The Andean hillstar (Oreotrochilus estella) is a species of hummingbird in the family Trochilidae. It is found in grassland, scrub and woodland in the Altiplano of southern Peru, Bolivia, northern Chile, and north-western Argentina.[2] It often includes the green-headed hillstar as a subspecies, but the male of that species has a black (not brown) stripe to the central underparts, and its upperparts are greener. Additionally, the green-headed hillstar is more closely related to the black-breasted hillstar and blue-throated hillstar than the Andean hillstar.[2][3] The species is unusually well adapted to cold nights in the Andes, which it survives by reducing its metabolic rate utilizing a state of torpor to something like that of hibernation in sheltered niches facing the rising sun. See also
References1. ^{{IUCN|id=22687765 |title=Oreotrochilus estella |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=26 November 2013}} 2. ^1 Handbook of the Birds of the World. Vol. 5, J. del Hoyo, A. Elliott & J. Sargatal (eds.), Barcelona, 1999. 3. ^Sornoza-Molina, F., J. F. Freile, J. Nilsson, N. Krabbe & E. Bonaccorso. 2018. A striking, critically endangered, new species of hillstar (Trochilidae: Oreotrochilus) from the southwestern Andes of Ecuador. Auk 135(4): 1146–1171.
External links{{Commons category|Oreotrochilus estella}}{{Wikispecies|Oreotrochilus estella}}{{Portal bar|Birds|Animals}}{{Taxonbar|from=Q873310}}{{DEFAULTSORT:hillstar, Andean}}{{hummingbird-stub}} 5 : Hillstars|Birds of the Andes|Birds of the Puna grassland|Birds described in 1838|Taxonomy articles created by Polbot |
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