Tepui Goldenthroat vs Allen's Hummingbird
Polytmus milleri 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Tepui Goldenthroat | Allen's Hummingbird |
|---|---|---|
| 学名 | Polytmus milleri | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 12.8 cm (5.0 in) | 8.1 cm (3.2 in) |
| 体重 | 4.76 g (0.17 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore visiting tepui shrub flowers and lowland grasses. Supplements nectar with small arthropods gleaned from … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Tepui Goldenthroat
Pure, bell-like tone with long resonance; single clear note ringing out then slowly fading in open woodland.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Tepui Goldenthroat
Found on tepui plateaus of Venezuela and adjacent Guyana and Brazil in open highland vegetation. 1,200–2,800 m.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
保护状况
Tepui Goldenthroat
Allen's Hummingbird
How to Tell Them Apart
Tepui Goldenthroat
Rufous-throated Sapphire: males with shining rufous throat; bronze-green back; white pectoral tufts; females green above with rufous throat
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Tepui Goldenthroat
A medium-sized hummingbird (10-11 cm) endemic to the tepui highlands of southern Venezuela and adjacent Guyana. Green plumage with a golden throat. Nectarivore of tepui scrub and forest edges. Restricted to the Pantepui region above 1,000 m. Poorly known.
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.