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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