White-necked Jacobin vs Rufous-booted Racket-tail
Florisuga mellivora so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | White-necked Jacobin | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Florisuga mellivora | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 13,6 cm (5.4 in) | — |
| Khối Lượng | 7,666666666666667 g (0.27 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectar generalist visiting a wide range of forest flowers; also catches small arthropods by aerial … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Số Trứng | 1-3 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-necked Jacobin
High, insect-like buzzing sustained for several seconds; thin monotone delivered continuously during hovering display flight.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
White-necked Jacobin
Found from Mexico south through Central America to Venezuela, Trinidad, and the western Amazon. Common in lowland forest edge and gardens.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Tình Trạng Bảo Tồn
White-necked Jacobin
Rufous-booted Racket-tail
How to Tell Them Apart
White-necked Jacobin
Males vivid blue head and throat; white nape and hindneck contrasting sharply with blue; white belly; green back; white tail with dark terminal band; females brown above, spotted below; bold …
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
White-necked Jacobin
A medium-sized hummingbird (11-12 cm) with a dazzling white breast, deep blue hood, and green back. Found from Mexico to Brazil and Trinidad. Male's brilliant white neck and chest are striking in flight. Nectarivore of forest canopy, visiting a wide variety of tropical flowers.
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.