Green-tailed Emerald vs Allen's Hummingbird
Chlorostilbon alice compared with Selasphorus sasin
Side-by-Side Comparison
| Attribute | Green-tailed Emerald | Allen's Hummingbird |
|---|---|---|
| Scientific Name | Chlorostilbon alice | Selasphorus sasin |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | — | 8.1 cm (3.2 in) |
| Weight | 3.5 g (0.12 oz) | 3.1500000000000004 g (0.11 oz) |
| Diet | Nectarivore of Venezuelan dry scrub, hovering at low shrub blooms. Catches gnats and spiders to … | 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
Green-tailed Emerald
Buzzy, sustained trill with insect-like quality; continuous high-frequency vibration with rapid amplitude modulation.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Green-tailed Emerald
Found in montane regions of Venezuela at 500-2,000 m elevation. A Venezuelan endemic or near-endemic.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Conservation Status
Green-tailed Emerald
Allen's Hummingbird
How to Tell Them Apart
Green-tailed Emerald
Elliot's Hummingbird (Elliotomyia): males with iridescent violet gorget; metallic green above; white underparts; females green; spots
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Green-tailed Emerald
A small hummingbird (8-9 cm) found in montane regions of Venezuela at 500-2,000 m. Green plumage with a green tail. Nectarivore of forest edges and clearings. A Venezuelan endemic or near-endemic. Sometimes treated as a subspecies.
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.