Appearance
The green-and-white hummingbird is 10 to 11 cm long. Males weigh about 6.0 g and females about 5.5 g. Both sexes have a medium length straight bill with a blackish maxilla and a reddish mandible with a dark tip. Adult males have brilliant green to bronze-green upperparts and flanks. Their undersides are whitish from the chin to the undertail coverts with greenish spots on the sides of the chin and throat and sometimes some golden-green on the coverts. Their tail is grayish green to golden green. Adult females are very similar to males, but with a light cream chin and throat that are more heavily spotted. Juveniles are similar to adult females with the cream of the throat extending to the belly.Distribution
The green-and-white hummingbird is found on the east slope of the Peruvian Andes discontinuously from Huánuco Department south to Cuzco, including at Machu Picchu.Status
The IUCN has assessed the green-and-white hummingbird as being of Least Concern, though its population size and trend are unknown. No immediate threats have been identified. It has a restricted range but is fairly common in Pasco Department and the Machu Picchu area. "[F]urther field studies are needed to clarify the type of conservation measures required for this species."Habitat
It inhabits the edges and clearings of mature subtropical forest and also secondary forest between the elevations of 1,000 and 2,500 m.Reproduction
The white-bellied hummingbird's full breeding season has not been determined, but it is known to include January. It makes a cup nest of plant wool bound by spiderweb with lichen on the outside, and often places it on a horizontal branch of a small tree. The incubation period and time to fledging are not known.Food
The white-bellied hummingbird forages for nectar at a variety of flowering plants, shrubs, and trees, though its diet is not known in detail. In addition to nectar it feeds on small arthropods.References:
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