Glittering-throated Emerald vs Allen's Hummingbird

Chionomesa fimbriata compared with Selasphorus sasin

Side-by-Side Comparison

Attribute Glittering-throated Emerald Allen's Hummingbird
Scientific Name Chionomesa fimbriata Selasphorus sasin
Order Caprimulgiformes Caprimulgiformes
Family Trochilidae Trochilidae
Conservation Status Least Concern Least Concern
Length — —
Wingspan — 8.1 cm (3.2 in)
Weight 4.766666666666667 g (0.17 oz) 3.1500000000000004 g (0.11 oz)
Diet Nectarivore probing tubular flowers in humid forest. Supplements nectar diet with small insects and spiders … Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with …
Clutch Size 2 2
Population Trend — —

Habitat Comparison

Shared Habitats

Glittering-throated Emerald only

Allen's Hummingbird only

None

Song & Call Comparison

Glittering-throated Emerald

Song

Buzzy, high-pitched insect-like trill; sustained rapid vibration with minimal melodic content near blossoms.

Allen's Hummingbird

Song

Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.

Geographic Range & Migration

Glittering-throated Emerald

Widely distributed from Colombia through Amazonia to Brazil, Bolivia, and Argentina. Resident in varied habitats.

Allen's Hummingbird

Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.

Conservation Status

Least Concern

Glittering-throated Emerald

Least Concern

Allen's Hummingbird

About These Birds

Glittering-throated Emerald

A medium-sized hummingbird (10-11 cm) widely distributed from Colombia through Amazonia to Brazil, Bolivia, and Argentina. Glittering green throat with white fringes creating a spangled effect. Nectarivore of forest edges, gardens, and open habitats.

Allen's Hummingbird

A small hummingbird (8-9 cm) breeding along the Pacific coast from Oregon to southern California. Males have an orange-red throat and rufous flanks. Closely related to Rufous Hummingbird. Partial migrant; some populations resident on Channel Islands. Named after Thomas Allen.

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