White-tufted Sunbeam vs Allen's Hummingbird
Aglaeactis castelnaudii compared with Selasphorus sasin
Side-by-Side Comparison
| Attribute | White-tufted Sunbeam | Allen's Hummingbird |
|---|---|---|
| Scientific Name | Aglaeactis castelnaudii | Selasphorus sasin |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Near Threatened | Least Concern |
| Length | — | — |
| Wingspan | 14.8 cm (5.8 in) | 8.1 cm (3.2 in) |
| Weight | 7.35 g (0.26 oz) | 3.1500000000000004 g (0.11 oz) |
| Diet | Nectarivore of Peruvian high-altitude scrub; forages at Chuquiraga and Ericaceae blooms. Supplements with small arthropods. | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| Clutch Size | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-tufted Sunbeam
Melodic, pure ascending phrase; clear flute-like tones rising smoothly in quiet musical sequence at high altitude.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
White-tufted Sunbeam
Endemic to Peru in high Andean puna and scrub, primarily in the Apurímac and Ayacucho regions. 3,200–5,000 m.
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-tufted Sunbeam
Allen's Hummingbird
About These Birds
White-tufted Sunbeam
A medium-sized hummingbird (12-13 cm) found in the Andes of Peru and Bolivia at 2,700-4,000 m. Coppery plumage with white breast tufts visible during courtship display. Nectarivore of montane scrub and Polylepis woodland. A Peruvian-Bolivian 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.