White-necked Jacobin vs Allen's Hummingbird
Florisuga mellivora 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | White-necked Jacobin | Allen's Hummingbird |
|---|---|---|
| 学名 | Florisuga mellivora | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 13.6 cm (5.4 in) | 8.1 cm (3.2 in) |
| 体重 | 7.666666666666667 g (0.27 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectar generalist visiting a wide range of forest flowers; also catches small arthropods by aerial … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 产卵数 | 1-3 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-necked Jacobin
High, insect-like buzzing sustained for several seconds; thin monotone delivered continuously during hovering display flight.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
White-necked Jacobin
Found from Mexico south through Central America to Venezuela, Trinidad, and the western Amazon. Common in lowland forest edge and gardens.
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
White-necked Jacobin
Allen's Hummingbird
How to Tell Them Apart
White-necked Jacobin
Males vivid blue head and throat; white nape and hindneck contrasting sharply with blue; white belly; green back; white tail with dark terminal band; females brown above, spotted below; bold …
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
White-necked Jacobin
白颈雅各宾蜂鸟，体长11-12厘米。胸部白色，头部深蓝色，背部绿色。分布于墨西哥至巴西和特立尼达。
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.