Grey-tailed Mountain-gem vs Rufous-booted Racket-tail
Lampornis cinereicauda compared with Ocreatus addae
Side-by-Side Comparison
| Attribute | Grey-tailed Mountain-gem | Rufous-booted Racket-tail |
|---|---|---|
| Scientific Name | Lampornis cinereicauda | Ocreatus addae |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Not Evaluated |
| Length | — | — |
| Wingspan | 12.4 cm (4.9 in) | — |
| Weight | 5.425 g (0.19 oz) | 3.0 g (0.11 oz) |
| Diet | Nectarivore of Costa Rican and Panamanian cloud forest; forages at Ericaceae and Salvia. Gleans small … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Clutch Size | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Grey-tailed Mountain-gem
Sharp, crackling chatter with percussive quality; rapid dry notes delivered forcefully near active territory boundary.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Grey-tailed Mountain-gem
Found in highland forest of Costa Rica, primarily the Pacific slope Talamanca range. 1,200–2,400 m.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Conservation Status
Grey-tailed Mountain-gem
Rufous-booted Racket-tail
About These Birds
Grey-tailed Mountain-gem
A medium-sized hummingbird (10-11 cm) endemic to the Talamanca highlands of Costa Rica and western Panama at 1,400-2,500 m. Males have green plumage with a grey tail. Nectarivore of cloud forest. Closely related to Purple-throated Mountain-gem.
Rufous-booted Racket-tail
A small hummingbird (8-10 cm plus tail rackets) found in Andean cloud forests of southeastern Peru and Bolivia at 1,200-2,200 m. Males have rufous leg puffs instead of white. Recently split from Booted Racket-tail. Nectarivore of montane forest undergrowth.