Green Thorntail vs Amethyst-throated Mountain-gem
Discosura conversii 对比 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | Green Thorntail | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Discosura conversii | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 8.4 cm (3.3 in) | 13.1 cm (5.2 in) |
| 体重 | 3.0 g (0.11 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectarivore visiting small flowers at forest canopy and edges. Forages in groups at flowering trees; … | Nectarivore of Mexican and Central American montane pine-oak forest; visits Ericaceae and Salvia. Gleans arthropods. |
| 产卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Green Thorntail
Pure, sustaining tone with bell-like quality; single clear note ringing firmly then slowly diminishing in open air.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
Green Thorntail
Found in foothill and lower montane forest from Costa Rica south through Colombia and Ecuador to Peru. 300–1,500 m.
Amethyst-throated Mountain-gem
Found in montane forest from Mexico south through Guatemala and Honduras to El Salvador. 1,000–3,200 m.
保护状况
Green Thorntail
Amethyst-throated Mountain-gem
How to Tell Them Apart
Green Thorntail
Purple-backed Sunbeam: males with glittering emerald gorget; brilliant purple back; metallic green crown; females plain green with spots
Amethyst-throated Mountain-gem
Bumblebee Hummingbird: tiny; males with brilliant violet gorget; metallic green above; white underparts; females green above; spotted
About These Birds
Green Thorntail
A tiny hummingbird (7-8 cm) with a long, wire-like tail extending to 10 cm total in males. Brilliant green plumage with white rump band. Found in humid forests from Costa Rica to western Ecuador. Nectarivore of forest canopy, hovering at tiny flowers. Fairy-like flight.
Amethyst-throated Mountain-gem
A medium-sized hummingbird (11-12 cm) found in mountain forests from Mexico to Honduras at 1,000-3,000 m. Males have an amethyst-purple throat. Nectarivore of pine-oak and cloud forest. Commonly visits feeders in Mexican highland gardens.