About Chaetocercus mulsant (Bourcier, 1843)
The white-bellied woodstar (Chaetocercus mulsant) has a scientific name of Chaetocercus mulsant (Bourcier, 1843).
Description: The white-bellied woodstar is approximately 8.5 cm (3.3 in) long and weighs between 3.8 and 4 g (0.13 to 0.14 oz). Both sexes have a nearly straight black bill. Males have dark bluish green upperparts that extend to their flanks. A downcurving white stripe behind the eye connects to the white upper breast. The male's gorget is iridescent reddish violet, the belly is white, and there are also white patches on the flanks. The male's tail is forked and bluish green, with only shafts and no vanes on its outermost feathers. Females have bronzy green upperparts, a grayish "mask", and a buff stripe behind the eye. The female's throat is pale cinnamon, the belly is white, and the flanks are tawny. The female's tail is rounded; the central tail feathers are green, and the rest are cinnamon with a wide black band near the tip.
Distribution and habitat: The white-bellied woodstar ranges from the Central and Eastern Andes of Colombia, extending south in discontinuous populations through Ecuador and Peru into Bolivia, reaching as far as Cochabamba Department. It inhabits humid forest edges, pastures, and cultivated areas. It is most common at elevations between 2,200 and 2,800 m (7,200 and 9,200 ft), but is regularly found as low as 1,500 m (4,900 ft), and there are documented records of individuals as high as 4,000 m (13,000 ft).
