Amethyst-throated Mountain-gem vs Red-tailed Comet

Lampornis amethystinus compared with Sappho sparganurus

Side-by-Side Comparison

Attribute Amethyst-throated Mountain-gem Red-tailed Comet
Scientific Name Lampornis amethystinus Sappho sparganurus
Order Caprimulgiformes Caprimulgiformes
Family Trochilidae Trochilidae
Conservation Status Least Concern Least Concern
Length — —
Wingspan 13.1 cm (5.2 in) 12.6 cm (5.0 in)
Weight 5.6000000000000005 g (0.20 oz) 5.4 g (0.19 oz)
Diet Nectarivore of Mexican and Central American montane pine-oak forest; visits Ericaceae and Salvia. Gleans arthropods. Nectarivore of Andean high-altitude scrub; visits Chuquiraga and Ericaceae flowers. Catches small insects near blooms.
Clutch Size 2 2
Population Trend — —

Habitat Comparison

Shared Habitats

Amethyst-throated Mountain-gem only

None

Red-tailed Comet only

None

Song & Call Comparison

Amethyst-throated Mountain-gem

Song

Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.

Red-tailed Comet

Song

Pure, bell-like tones in descending sequence; clear musical notes stepping down smoothly with resonant ringing quality.

Geographic Range & Migration

Amethyst-throated Mountain-gem

Found in montane forest from Mexico south through Guatemala and Honduras to El Salvador. 1,000–3,200 m.

Red-tailed Comet

Found in the Andes and Patagonian scrub of Argentina and Bolivia from 1,000–4,200 m. Partly migratory southward.

Conservation Status

Least Concern

Amethyst-throated Mountain-gem

Least Concern

Red-tailed Comet

About These Birds

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.

Red-tailed Comet

A stunning hummingbird (15-22 cm including tail) found in dry inter-Andean valleys from Bolivia to northwestern Argentina at 2,000-4,500 m. Males have a deeply forked, iridescent red-orange tail. Nectarivore of arid scrub and cactus flowers. An iconic Andean species.

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