Horned Sungem vs Rufous-booted Racket-tail
Heliactin bilophus 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Horned Sungem | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Heliactin bilophus | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 9.6 cm (3.8 in) | — |
| 体重 | 2.3 g (0.08 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of open savanna and cerrado, visiting small flowers of grasses and shrubs. Catches tiny … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Horned Sungem
Melodic, rolling phrase with rich timbre; warm, musical notes tumbling loosely in pleasant sequence at midday.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Horned Sungem
Found in cerrado, caatinga, and dry open habitats across central Brazil from Maranhão to Minas Gerais and Mato Grosso. 300–1,100 m.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保护状况
Horned Sungem
Rufous-booted Racket-tail
How to Tell Them Apart
Horned Sungem
Green-tailed Goldenthroat: males with glittering emerald gorget and violet crown; females green above; pale buff with green-spotted flanks
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
About These Birds
Horned Sungem
双冠蜂鸟是巴西中部特有的蜂鸟，雄鸟头部具两道彩色羽冠，极为华丽。体型小，喙短直。栖息于巴西热带稀树草原（塞拉多），以花蜜为主食。具有独特的展示行为，飞翔时上下起伏以展示头冠。
Rufous-booted Racket-tail
A small hummingbird (8-10 cm plus tail rackets) found in Andean cloud forests of southeastern Peru and Bolivia at 1,200-2,200 m. Males have rufous leg puffs instead of white. Recently split from Booted Racket-tail. Nectarivore of montane forest undergrowth.