Amethyst Woodstar vs Rufous-booted Racket-tail
Calliphlox amethystina compared with Ocreatus addae
Side-by-Side Comparison
| Attribute | Amethyst Woodstar | Rufous-booted Racket-tail |
|---|---|---|
| Scientific Name | Calliphlox amethystina | Ocreatus addae |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Not Evaluated |
| Length | — | — |
| Wingspan | 7.0 cm (2.8 in) | — |
| Weight | 2.9 g (0.10 oz) | 3.0 g (0.11 oz) |
| Diet | Nectarivore visiting small flowers at forest edges and clearings; insect-like flight. Catches tiny flies and … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Clutch Size | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Amethyst Woodstar
High, crystalline notes in ascending phrase; clear bright musical tones climbing smoothly in lively morning song.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Amethyst Woodstar
Widespread in open habitats from Bolivia and Brazil south to Argentina, Paraguay, and Uruguay. Sea level to 1,200 m.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Conservation Status
Amethyst Woodstar
Rufous-booted Racket-tail
How to Tell Them Apart
Amethyst Woodstar
Buff-breasted Sabrewing: males with glittering purple gorget; metallic bronze-green above; buff underparts; females green above; spots
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
Amethyst Woodstar
A tiny hummingbird (7-8 cm) found in humid forests from eastern Colombia and Venezuela through Amazonia to Brazil, Bolivia, and Argentina. Males have an amethyst-purple throat. Nectarivore of forest edges and clearings. One of the most widespread woodstars.
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.