Fawn-breasted wren
Species of bird
From Wikipedia, the free encyclopedia
The fawn-breasted wren (Cantorchilus guarayanus) is a species of bird in the family Troglodytidae. It is found in Bolivia, Brazil, and Paraguay.[2]
| Fawn-breasted wren | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Troglodytidae |
| Genus: | Cantorchilus |
| Species: | C. guarayanus |
| Binomial name | |
| Cantorchilus guarayanus (Lafresnaye & D'Orbigny, 1837) | |
 | |
| Synonyms | |
|
Thryothorus guarayanus | |
Taxonomy and systematics
The fawn-breasted wren has sometimes been treated as conspecific with the buff-breasted wren (Cantorchilus leucotis), though they have very different vocalizations.[3] The species is monotypic.[2]
Description
The fawn-breasted wren is 13.5 cm (5.3 in) long and weighs 13 to 14 g (0.46 to 0.49 oz). Adults have a plain medium brown crown and upperparts that becomes rufescent on the lower back and rump. Their tail is reddish brown with crisp black bars. They have a narrow white supercilium mostly behind the eye, cheeks mottled gray-white and blackish, and black malar and moustachial stripes. Their chin is whitish, the chest a warm orange-buff, and the belly and vent area a deeper orange-buff. Juveniles are similar but their facial markings are less distinct.[3]
Distribution and habitat
The fawn-breasted wren is found across much of northeastern Bolivia, a fairly thin slice of adjacent western Brazil, and a small part of northeastern Paraguay. It inhabits várzea scrubland and secondary forest, mostly near water. In elevation it ranges up to approximately 400 m (1,300 ft).[3]
Behavior
Feeding
The fawn-breasted wren forages in pairs during the dry season and small family groups after nesting. It hunts in dense growth, usually from the ground up to 4 m (13 ft) above it, but sometimes as high as 10 m (33 ft). Its diet has not been documented.[3]
Breeding
Only a few fawn-breasted wren nests have been described, and little has been published about its breeding phenology. Nests are a flimsy dome of grasses and root hairs with a side entrance placed up to 3 m (9.8 ft) above ground in weeds, bushes, or the base of a small palm. The clutch size is two.[3]
Vocalization
The members of a fawn-breasted wren pair sing antiphonally, the male's part a "cheerilo-choli" and the female's "pew-pew, pew-pew". Calls include a repeated "pew-pew" and harsh clicks.[3]