Lampornis sybillae
The Green-breasted Mountaingem (Lampornis sybillae) is a captivating medium-sized hummingbird, instantly recognizable by the male's dazzling iridescent emerald-green throat and breast, which shimmers with every turn. Measuring approximately 11-12 cm in length and weighing 5-6 grams, both sexes sport a prominent white post-ocular stripe contrasting with a dark ear patch and dark green upperparts. While males boast the vibrant green underparts, females are more subtly adorned with duller green ...
Found exclusively in humid montane evergreen and cloud forests, forest edges, and clearings. Primarily inhabits elevations between 1,400 to 2,400 meters (4,600-7,900 ft).
Primarily consumes nectar from a wide variety of flowering plants, supplemented by small insects and spiders gleaned from foliage or caught in mid-air for essential protein.
Green-breasted Mountaingems are highly active during daylight hours, exhibiting a typical hummingbird diurnal pattern, often entering torpor during cold nights to conserve energy. Their foraging strategy combines trap-lining, where they visit a circuit of flower patches, with aggressive territori...
The Green-breasted Mountaingem is endemic to a relatively restricted range within the humid highlands of Central America. Its primary distribution extends through the montane forests of Honduras and into north-central Nicaragua, where it is considered a resident species throughout the year. There...
Least Concern
- A tiny brain, less than 1% of its body weight, still processes complex spatial memory for trap-lining, remembering flower locations and their nectar refill rates. - Its heart beats incredibly fast, often over 1,200 times per minute during strenuous activity, a testament to its high metabolic ra...