Anabate à poitrine striée

Identification

The stripe-breasted spinetail is 14 to 16 cm (5.5 to 6.3 in) long and weighs 15 to 23 g (0.53 to 0.81 oz). It has one of the shortest tails of genus Synallaxis. The sexes have the same plumage. Adults of the nominate subspecies S. c. cinnamomea have a faint pale supercilium on an otherwise dull rufous face. Their crown, nape, back, rump, and uppertail coverts are rich brown. Their wings are rufous-chestnut with blackish tips on their flight feathers. Their tail is rich brown; it is graduated and the ends of the feathers lack barbs giving a spiny appearance. Their throat is streaked black on white. Their underparts are rufous with fulvous streaks (unique in Synallaxis); the belly is paler than the rest with duller streaks. Their iris is reddish to creamy brown to dark brown, their maxilla dark horn to black, their mandible gray-horn or pinkish with a dark horn tip, and their legs and feet black to grayish to pale gray-brown. Juveniles are browner than adults, with a less distinct and less black throat and less distinct streaks on the underparts.<p>The other subspecies of the stripe-breasted spinetail differ from the nominate and each other thus:<p>The dramatic plumage differences between the nominate and bolivari hint that the latter might be a separate species; "further work needed".

Taxonomie

The stripe-breasted spinetail has these seven subspecies:<p>The stripe-breasted spinetail is closely related to the ruddy spinetail (S. rutilans) and chestnut-throated spinetail (S. cherriei).

Nom scientifique

Synallaxis cinnamomea

Autorité

Lafresnaye, 1843

Ordre

Passériformes

Famille

Furnariidés

Genre

Synallaxis

Répartition et habitat

The stripe-breasted spinetail has a disjunct distribution. The subspecies are found thus:<p>On the South American mainland the stripe-breasted spinetail inhabits a variety of landscapes, primarily subtropical and tropical deciduous forest, gallery forest, and arid montane and second-growth scrublands. It also inhabits undergrowth in the interior and edges of tropical lowland and lower montane forest, and locally occurs in second-growth woodlands and overgrown coffee plantations. On Trindad and Tobago it primarily inhabits the undergrowth of forests. In elevation it ranges between 800 and 3,100 m (2,600 and 10,200 ft) in Colombia and between 700 and 2,000 m (2,300 and 6,600 ft) in Venezuela.

Migration

Resident species

Comportement

The stripe-breasted spinetail is a year-round resident throughout its range.<p>The stripe-breasted spinetail feeds on arthropods. It typically forages in pairs and occasionally joins mixed-species feeding flocks. It gleans prey from foliage and branches up to about 2 m (7 ft) above the ground, and on the ground explores leaf litter for prey.<p>The stripe-breasted spinetail breeds at any time of the year on Trinidad and at a minimum between March and August on Tobago; its breeding season in Colombia and Venezuela are not known. Though it is a member of the ovenbird family, which is named for the clay nests many species make, the stripe-breasted spinetail constructs a globe of sticks and leaves with an entrance tunnel on top. It can be placed on sloping ground or in a bush up to about 3 m (10 ft) above the ground. The clutch size is three eggs. The incubation period, time to fledging, and details of parental care are not known.<p>The stripe-breasted spinetail's song is two notes, of which the second is lower but rising, " a nasal, sharp 'chík-kweek' or 'chúrt-wert' " that is often repeated for long periods. Its calls are a "soft, whining 'peeeur' or querulous 'chew' ".

Conservation

Tendance de la population

stable