Description wikipedia

The brown-bellied swallow (Orochelidon murina) is a species of bird in the family Hirundinidae, the swallows and martins. It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela. The brown-bellied swallow is about 14 cm (5.5 in) long and weighs about 12.5 g (0.44 oz). The sexes have similar plumage though females are duller overall than males. Adult males of the nominate subspecies have a mostly blackish head and neck with a blue-green gloss and a sooty gray-brown throat. Their upperparts are blackish with a blue-green gloss. Their tail is moderately forked; it and their wings are dark brown. Their underparts are mostly sooty gray-brown with black undertail coverts. Juveniles are duller than adults with a brown throat, gray-white underparts, and a shorter tail. Subspecies O. m. meridensis has bluer upperparts than the nominate. The male's undertail coverts have dark metallic blue tips and females' have brown tips. O. m. cyanodorsalis has a steel-blue gloss on its upperparts and black undertail coverts. The brown-bellied swallow has a disjunct distribution. Subspecies O. m. meridensis is the northernmost. It is found in the isolated Sierra Nevada de Santa Marta in northern Colombia, in the Serranía del Perijá that straddles the Colombia-Venezuela border, and from Trujillo in western Venezuela south through Colombia's Eastern Andes as far as Boyacá Department. The nominate subspecies is found in from Antioquia Department in northwestern Colombia south through Ecuador to south-central Peru. O. m. cyanodorsalis is found from Puno Department in southeastern Peru south to central Bolivia. The brown-bellied swallow is a bird of the Andes. It inhabits open to semi-open landscapes such as grasslands, shrublands, elfin forest, Polylepis woodlands, farmland, and areas around houses, and is often found near water. In elevation it has been documented in Venezuela between 2,200 and 3,000 m (7,200 and 9,800 ft) with sight records both lower and higher. It is found between 2,000 and 3,600 m (6,600 and 11,800 ft) in Colombia, mostly between 2,500 and 4,000 m (8,200 and 13,100 ft) in Ecuador, and between 2,200 and 4,300 m (7,200 and 14,100 ft) in Peru.