Rufous-booted Racket-tail vs Long-tailed Woodnymph
Ocreatus addae so với Thalurania watertonii
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Long-tailed Woodnymph |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Thalurania watertonii |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Endangered |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 10,9 cm (4.3 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 4,3999999999999995 g (0.16 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Feeds on floral nectar in Atlantic Forest understory; supplements diet with small insects and spiders … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Rufous-booted Racket-tail only
Không
Long-tailed Woodnymph only
Không
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Long-tailed Woodnymph
Soft, sibilant notes in flowing sequence; gentle high twittering with airy quality near flowering vegetation.
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.
Long-tailed Woodnymph
Endemic to the Atlantic Forest of northeastern Brazil. Classified as Endangered due to severe habitat fragmentation.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Long-tailed Woodnymph
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
Long-tailed Woodnymph
Savile's Bustard: pale brown above; white underparts; black crown; pale streaked mantle; males with dark collar; sexually dimorphic
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.
Long-tailed Woodnymph
A medium-sized hummingbird (11-12 cm) endemic to the Atlantic Forest of northeastern Brazil. Males have a long, deeply forked violet-blue tail and green body. Nectarivore of forest edges. Classified as Endangered due to severe Atlantic Forest fragmentation.