Rufous-booted Racket-tail vs Buffy Helmetcrest
Ocreatus addae so với Oxypogon stuebelii
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Buffy Helmetcrest |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Oxypogon stuebelii |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 11,1 cm (4.4 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 5,4 g (0.19 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of high páramo and superparamo; visits sparse Espeletia and Chuquiraga flowers in harsh conditions. … |
| Số Trứng | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Buffy Helmetcrest
Pure, sustained flute-like tone; single clear note held steadily then fading, warm and round in quiet forest shade.
Geographic Range & Migration
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Buffy Helmetcrest
Endemic to the Ruiz-Tolima volcanic massif of Colombia in high páramo at 3,800–4,800 m. Locally common.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Buffy Helmetcrest
How to Tell Them Apart
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
Buffy Helmetcrest
Purple-chested Hummingbird: males with brilliant iridescent violet-purple breast; metallic green above; females green with spotted below
About These Birds
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.
Buffy Helmetcrest
A small hummingbird (11-12 cm) endemic to the central Andes of Colombia at 3,500-4,500 m. Males have a striking erect crest and buffy beard. Nectarivore of high-altitude páramo, visiting Espeletia frailejón plants. Named after the German explorer Alphons Stübel.