White-vented Violetear vs Allen's Hummingbird
Colibri serrirostris compared with Selasphorus sasin
Side-by-Side Comparison
| Attribute | White-vented Violetear | Allen's Hummingbird |
|---|---|---|
| Scientific Name | Colibri serrirostris | Selasphorus sasin |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 13.6 cm (5.4 in) | 8.1 cm (3.2 in) |
| Weight | 6.199999999999999 g (0.22 oz) | 3.1500000000000004 g (0.11 oz) |
| Diet | Nectarivore of highland and lowland forest margins. Feeds on diverse tubular flowers and catches flying … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| Clutch Size | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-vented Violetear
Sharp, emphatic squeak repeated quickly; tiny piercing notes delivered insistently during competitive encounters near feeders.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
White-vented Violetear
Found in cerrado, chaco, and open woodland of central and southern Brazil, Bolivia, and Paraguay. 200–1,200 m elevation.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Conservation Status
White-vented Violetear
Allen's Hummingbird
About These Birds
White-vented Violetear
A medium-sized hummingbird (11-12 cm) with green plumage, violet ear patches, and a distinctive white vent. Found in cerrado and open habitats of central South America from Brazil to Argentina. Nectarivore of savanna flowers and gardens. An adaptable, widespread species.
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.