Green-fronted Lancebill vs Rufous-booted Racket-tail
Doryfera ludovicae so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | Green-fronted Lancebill | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Doryfera ludovicae | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 11,5 cm (4.5 in) | — |
| Khối Lượng | 5,95 g (0.21 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore probing epiphyte flowers and bromeliads with long straight bill in montane forest. Supplements with … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Green-fronted Lancebill only
Không
Rufous-booted Racket-tail only
Không
Song & Call Comparison
Green-fronted Lancebill
Rough, raspy chattering with energetic rhythm; series of coarse notes delivered rapidly near active foraging territories.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Green-fronted Lancebill
Found in Andean cloud forests from Costa Rica through Colombia, Venezuela, Ecuador, and Peru to Bolivia. 1,200–2,400 m.
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
Green-fronted Lancebill
Rufous-booted Racket-tail
How to Tell Them Apart
Green-fronted Lancebill
Spangled Coquette: males with spectacular white upswept crest; glittering green gorget; females with white-streaked crest; buff-white below
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
Green-fronted Lancebill
A medium-sized hummingbird (11-12 cm) with a remarkably long, straight bill (40 mm). Green plumage with a violet-blue forehead. Found in Andean cloud forests from Costa Rica to Bolivia at 800-2,500 m. Named lancebill for its dagger-like bill used to pierce the base of long tubular 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.