Troglodyte montagnard

Troglodytes solstitialis

Un petit troglodyte à queue courte trouvé dans les forêts montagnardes du Venezuela à l'Argentine. Globalement brun avec des parties inférieures chamois plus claires et un sourcil blanchâtre ou chamois évident. À comparer avec le Troglodyte familier, qui a un sourcil beaucoup moins proéminent, une queue plus longue et un habitat et des habitudes différents. Le Troglodyte montagnard peut être trouvé seul ou en couples, se déplaçant souvent avec une bande mixte dans les niveaux moyens de la forêt. Il se trouve principalement d'environ 1 500 à 3 200 m, mais occasionnellement jusqu'à moins de 1 000 m. Écoutez son chant tintinnabulant aigu.

Identification

The mountain wren is 10.5 to 11.5 cm (4.1 to 4.5 in) long and has a mean weight of 11.8 g (0.42 oz). The adult of the nominate subspecies has a rufous brown forehead and crown, a less reddish brown nape, shoulders, back, and rump, and a rufous brown tail with narrow black bars. The folded wings also appear barred. It has a buffy brown supercilium with a darker brown line behind the eye and warm buff cheeks. The throat and chest are also warm buff, the belly a paler buff, the flanks buffy brown with darker bars, and the vent grayish, also with darker bars. The juvenile's supercilium and upperparts are less warm and its underparts dull gray brown with darker speckles.<p>Subspecies T. s. solitarius differs from the nominate with darker upperparts and cheeks, a paler throat, and less reddish flanks. T. s. macrourus is larger than the nominate and has a longer tail, and the middle of its breast is white. T. s. frater is similar to macrourus but has a whitish supercilium. T. s. auricularis is similar to frater but has a shorter tail and its upperparts are not as reddish.

Taxonomie

The mountain wren has at times been considered to include the Santa Marta wren (Troglodytes monticola), ochraceous wren (T. achraceus), rufous-browed wren (T. rufociliatus), and tepui wren (T. rufulus) as subspecies. The South American Classification Committee of the American Ornithological Society (SACC/AOS) considers the five of them to be a superspecies. The mountain wren has five subspecies:

Nom scientifique
Troglodytes solstitialis
Autorité
Sclater, PL, 1859
Ordre
Passériformes
Famille
Troglodytidae
Genre
Troglodytes

Répartition et habitat

The subspecies of mountain wren are found thus:<p>The mountain wren inhabits humid montane forest, cloud forest, and their edges up to tree line. It is also sometimes found in bamboo thickets. In elevation it mostly ranges between 1,700 and 3,500 m (5,600 and 11,500 ft) but is found as low as 700 m (2,300 ft) in Argentina.

Migration
Espèce sédentaire

Comportement

Mode de migration: Espèce sédentaire.

Conservation

Tendance de la population: en déclin.

Tendance de la population
en déclin

Photos

Distribution

Chants d'Oiseaux

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