Lampornis castaneoventris
The White-throated Mountaingem, *Lampornis castaneoventris*, is a medium-sized hummingbird renowned for its striking appearance and high-elevation habitat. Males boast iridescent green upperparts, a brilliant white throat patch, and a conspicuous chestnut belly, often tinged rufous, contrasting with a dark, forked tail. Females are generally duller, presenting a more muted green back and a variable buffy or whitish throat, sometimes mottled, but still exhibit the distinct chestnut belly. Meas...
Primarily inhabits humid montane cloud forests, evergreen forests, and forest edges, favoring areas with abundant flowering plants and dense undergrowth. Found at elevations typically ranging from 1,200 to 3,000 meters (4,000 to 10,000 ft).
Primarily feeds on nectar from a variety of flowering plants, particularly those with long, tubular blossoms, supplemented by small arthropods like insects and spiders caught by hawking in flight or gleaning from foliage.
White-throated Mountaingems are diurnal, actively foraging throughout the day but becoming less active during inclement weather, often entering torpor at night in cooler conditions. Their foraging strategy involves both traplining, where they systematically visit a circuit of flower patches, and ...
The White-throated Mountaingem (*Lampornis castaneoventris*) is endemic to the highlands of Central America, specifically found in Costa Rica and western Panama. Its distribution is largely disjunct, with populations concentrated in the Talamanca mountain range spanning southern Costa Rica and we...
Least Concern
- The "Mountaingem" in its name perfectly reflects its preferred high-altitude montane forest habitat. - These hummingbirds can enter a state of torpor on cold nights, significantly slowing their metabolism to conserve energy. - Despite their robust size, their wing beats are incredibly fast, ena...