| 词条 | Mountain elaenia |
| 释义 |
| name = Mountain elaenia | image = Mountain Elaenia - Colombia S4E2481.jpg | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Elaenia | species = frantzii | authority = Lawrence, 1865 | subdivision_ranks = Subspecies | subdivision = see text }} The mountain elaenia (Elaenia frantzii) is a small passerine bird in the tyrant flycatcher family. It breeds in highlands from Guatemala to Colombia and western Venezuela. The scientific name celebrates the German physician and naturalist, Alexander von Frantzius. DescriptionThis tyrant flycatcher is {{convert|14|–|15|cm|in|abbr=on}} long and weighs {{convert|17|-|20|g|oz|abbr=on}}. The upperparts are dull olive, with a narrow white eye ring. The wings are dusky with narrow yellow feather edges and two off-white wing bars. The throat and breast are yellowish grey, becoming dull yellow on the belly. Sexes are similar, but young birds are browner above, paler below and have brighter wing bars. SubspeciesFour subspecies are recognized:[2]
BehaviourThis is an inconspicuous species, with a slurred peeeeur call, longer than that of mistletoe tyrannulet, and a repetitive d’weet d’weet song. It is solitary when not breeding. BreedingThe mountain elaenia breeds between {{convert|1200|and|2900|m|ft|abbr=on}} in altitude in wet mountain forests, especially at the edges and in clearings and in adjacent second growth, semi-open areas, or pastures with trees. It moves lower in winter, down to {{convert|600|m|ft|abbr=on}}, and also appears to undergo seasonal movements.[4] Its nest is a cup of mosses, liverworts and lichens, lined with plant fibres. It is built by the female {{convert|2|–|15|m|ft|abbr=on}} high in a tree or bamboo. The two cinnamon-blotched whitish eggs are incubated by the female for 15–16 days to hatching. FeedingIt perches on a shaded watchpoint from which it sallies forth to pick insects, spiders, and many berries and seeds from foliage or even the ground. All its food is taken in flight. ReferencesNotes1. ^{{IUCN|id=22699298 |title=Elaenia frantzii |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=26 November 2013}} [3]2. ^IOC v.6.3 3. ^1 {{cite journal |last=Strewe |first=Ralf |last2=Navarro |first2=Cristobal |date=2004 |title=New and noteworthy records of birds from the Sierra Nevada de Santa Marta region, north-eastern Colombia |journal=Bulletin of the British Ornithologists' Club |publisher=British Ornithologists' Club |volume=124 |issue=1 |pages=38–51 |url=https://www.biodiversitylibrary.org/item/123799#page/46/mode/1up }} }} Sources
External links{{commons category|Elaenia frantzii}}{{Wikispecies|Elaenia frantzii}}
9 : Elaenia|Birds of Honduras|Birds of Nicaragua|Birds of Costa Rica|Birds of Panama|Birds of the Colombian Andes|Birds of the Sierra Nevada de Santa Marta|Birds of the Venezuelan Coastal Range|Birds described in 1865 |
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