Garden Emerald vs Allen's Hummingbird
Chlorostilbon assimilis compared with Selasphorus sasin
Side-by-Side Comparison
| Attribute | Garden Emerald | Allen's Hummingbird |
|---|---|---|
| Scientific Name | Chlorostilbon assimilis | Selasphorus sasin |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 9.0 cm (3.5 in) | 8.1 cm (3.2 in) |
| Weight | 3.55 g (0.13 oz) | 3.1500000000000004 g (0.11 oz) |
| Diet | Feeds on floral nectar in lowland Panama gardens and woodland. Catches 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
Song & Call Comparison
Garden Emerald
Thin, sibilant buzz with wavering quality; soft high trill with gentle tremolo effect during hover display.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Garden Emerald
Found in humid lowlands from Costa Rica to northern Colombia on the Pacific slope. Resident in gardens and second growth.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Conservation Status
Garden Emerald
Allen's Hummingbird
How to Tell Them Apart
Garden Emerald
Plain-bellied Emerald: males with brilliant violet gorget; metallic green above; plain whitish belly; females green above; spotted
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Garden Emerald
A small hummingbird (8-9 cm) found in humid lowlands from Costa Rica to northern Colombia. Bright green plumage. Nectarivore of gardens, second growth, and forest edges. Closely related to Canivet's Emerald. Found primarily on the Pacific slope.
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.