Purple-backed Sunbeam vs Allen's Hummingbird
Aglaeactis aliciae 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Purple-backed Sunbeam | Allen's Hummingbird |
|---|---|---|
| 学名 | Aglaeactis aliciae | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 16.2 cm (6.4 in) | 8.1 cm (3.2 in) |
| 体重 | 7.4 g (0.26 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore of restricted Peruvian high puna; visits Chuquiraga and cushion-plant flowers. Gleans tiny arthropods. | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 产卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Purple-backed Sunbeam
Sharp, buzzy chip followed by rapid trill; emphatic onset launching into rough cascading notes typical of sunbeam.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Purple-backed Sunbeam
Endemic to Peru along the Río Marañón drainage in the arid upper Andes. 2,400–3,800 m. Critically endangered.
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
Purple-backed Sunbeam
Allen's Hummingbird
How to Tell Them Apart
Purple-backed Sunbeam
Blue-capped Puffleg: males with brilliant blue cap and gorget; metallic green body; white leg puffs; females green above; spotted
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Purple-backed Sunbeam
紫背辉蜂鸟（Aglaeactis aliciae），体长12-13厘米，特产于秘鲁北部安第斯山脉一小片区域，海拔2,900至3,700米。属蜂鸟科（Trochilidae），背部具闪光紫色斑块，分布极为局限，受到保护关注。
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.