Eastern Mountaineer vs Allen's Hummingbird
Oreonympha nobilis compared with Selasphorus sasin
Side-by-Side Comparison
| Attribute | Eastern Mountaineer | Allen's Hummingbird |
|---|---|---|
| Scientific Name | Oreonympha nobilis | Selasphorus sasin |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 16.0 cm (6.3 in) | 8.1 cm (3.2 in) |
| Weight | 8.333333333333334 g (0.29 oz) | 3.1500000000000004 g (0.11 oz) |
| Diet | Nectarivore of Andean dry valley scrub; visits Cactaceae, Puya, and Chuquiraga flowers. Catches small insects … | 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
Eastern Mountaineer
Harsh, nasal chatter with buzzy overtone; rough emphatic notes delivered rapidly with raw coarse texture.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Eastern Mountaineer
Endemic to Peru in the upper Apurímac and Urubamba drainages in arid high-altitude scrub. 2,500–4,000 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
Eastern Mountaineer
Allen's Hummingbird
How to Tell Them Apart
Eastern Mountaineer
White-vented Plumeleteer: males glittering violet gorget; metallic green; white vent; females green above; pale spotted underparts
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Eastern Mountaineer
A medium-sized hummingbird (12-14 cm) endemic to the Andes of Peru at 2,800-4,500 m. Brown plumage with iridescent throat patch and long, forked tail. Nectarivore of puna scrub and Polylepis woodland. The only member of its genus. A Peruvian endemic.
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.