Black-bellied Thorntail vs Sword-billed Hummingbird
Discosura langsdorffi 비교 대상 Ensifera ensifera
Side-by-Side Comparison
| 속성 | Black-bellied Thorntail | Sword-billed Hummingbird |
|---|---|---|
| 학명 | Discosura langsdorffi | Ensifera ensifera |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 7.0 cm (2.8 in) | 15.3 cm (6.0 in) |
| 체중 | 3.2 g (0.11 oz) | 12.75 g (0.45 oz) |
| 식성 | Nectarivore visiting diverse canopy flowers in humid Amazonian forest. Takes small arthropods in aerial hover-gleaning. | Nectarivore uniquely adapted to extremely long flowers of Passiflora and Datura. Supplements with small insects … |
| 산란 수 | 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.
Sword-billed Hummingbird
Thin, reedy whistle with plaintive character; soft nasal tone held briefly then gently fading in mist.
Geographic Range & Migration
Black-bellied Thorntail
Found in lowland Amazonian forest from southeastern Colombia south through Ecuador and Peru to Bolivia. 100–600 m.
Sword-billed Hummingbird
Found in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,700–3,500 m.
보전 상태
Black-bellied Thorntail
Sword-billed 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
Sword-billed Hummingbird
Olivaceous Thornbill: males with iridescent purple gorget; metallic olive-bronze above; white underparts; females green above; spots
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.
Sword-billed Hummingbird
칼날부리벌새(14~15cm 몸통)로 부리가 몸통만큼 긴(8~10cm) 놀라운 벌새이다. 콜롬비아와 에콰도르 안데스 고지에 서식. 긴 꽃통 꽃의 꿀을 먹도록 진화했다. 관심필요종.