Urosticte ruficrissa
The Rufous-vented Whitetip, scientifically known as *Urosticte ruficrissa*, is a captivating small hummingbird of the Andes, typically measuring 8 to 9 cm in length and weighing between 3.5 to 4.5 grams. Males boast a resplendent iridescent green plumage over most of their body, brilliantly contrasted by striking chestnut-red undertail coverts, giving the species its 'rufous-vented' name. A key identification feature, shared by both sexes but more pronounced in males, is the deeply forked tai...
Found primarily in humid montane and cloud forests, forest edges, and secondary growth, typically at elevations ranging from 1,000 to 2,800 meters above sea level.
Primarily feeds on nectar from a variety of flowering plants, particularly those with tubular corollas, supplemented by small arthropods caught in flight for essential protein.
Rufous-vented Whitetips are highly active, diurnal birds, constantly foraging to support their high metabolism. They employ both 'traplining' - visiting a circuit of scattered flowers - and territorial defense, aggressively guarding rich patches of blossoms against rivals. Males are often fiercel...
The Rufous-vented Whitetip is an Andean endemic, with its distribution spanning across specific mountainous regions of South America. The nominate subspecies, *Urosticte ruficrissa ruficrissa*, is found in the Central and Western Andes of Colombia, extending southward into the eastern Andes of Ec...
Least Concern
- The Rufous-vented Whitetip's wings beat so rapidly (up to 80 times per second) they create a distinct hum, which helps it hover with incredible precision. - Its metabolism is among the fastest of any vertebrate, requiring it to feed almost constantly throughout the day. - The 'rufous-vented' pa...