White-throated Mountain-gem illustration
Birdsong field guide

White-throated Mountain-gem

Lampornis castaneoventris

A large, sexually dimorphic hummingbird of high-altitude cloud forests, easily identified by the male's brilliant white gorget and the female's distinct cinnamon underparts.

What it sounds like

A sharp, high-pitched metallic 'tsit' or 'peek', and a buzzy, squeaky song composed of rapid chattering notes.

Reference call, compare with what you heard
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Rec. Peter Boesman · PanamaCC BY-NC-NDXeno-canto

Field notes

  • The species displays extreme sexual dimorphism; males have a glittering white throat and green belly, while females have entirely rufous-chestnut underparts.
  • It was historically considered conspecific with the Grey-tailed Mountain-gem and the Purple-throated Mountain-gem.
  • These birds are highly territorial and will aggressively defend high-quality nectar sources from both conspecifics and other hummingbird species.
  • They are primary pollinators for many highland epiphytes and shrubs, particularly those in the Ericaceae and Gesneriaceae families.
  • During courtship, males perform a U-shaped flight display to attract females, highlighting their iridescent crown and throat.
Habitat
Moist montane forests, cloud forests, and forest edges, typically at elevations between 1,500 and 3,000 meters.
Range
Endemic to the Talamanca highlands of southern Costa Rica and western Panama.

Similar & commonly confused birds

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