Black-bellied Thorntail vs Allen's Hummingbird
Discosura langsdorffi 비교 대상 Selasphorus sasin
Side-by-Side Comparison
| 속성 | Black-bellied Thorntail | Allen's Hummingbird |
|---|---|---|
| 학명 | Discosura langsdorffi | Selasphorus sasin |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 7.0 cm (2.8 in) | 8.1 cm (3.2 in) |
| 체중 | 3.2 g (0.11 oz) | 3.1500000000000004 g (0.11 oz) |
| 식성 | Nectarivore visiting diverse canopy flowers in humid Amazonian forest. Takes small arthropods in aerial hover-gleaning. | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 산란 수 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black-bellied Thorntail
Deep, hollow churring with resonant character; prolonged low buzzing sound vibrating persistently through dense foliage.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Black-bellied Thorntail
Found in lowland Amazonian forest from southeastern Colombia south through Ecuador and Peru to Bolivia. 100–600 m.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
보전 상태
Black-bellied Thorntail
Allen's Hummingbird
How to Tell Them Apart
Black-bellied Thorntail
Red-tailed Comet: males with glittering green gorget; brilliant coppery-bronze crown; metallic green back; reddish tail; females duller
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Black-bellied Thorntail
수컷은 어두운 배와 라켓 끝이 있는 길고 전선 같은 외부 꼬리 깃털을 가진 7–8cm(그외 꼬리 깃털 포함) 소형 벌새로 콜롬비아 동부에서 아마존을 거쳐 볼리비아·브라질까지 저지림에 서식한다. 삼림 수관부와 가장자리에서 꿀을 먹는다.
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.