Amazilia Hummingbird vs Olivaceous Thornbill
Amazilis amazilia compared with Chalcostigma olivaceum
Side-by-Side Comparison
| Attribute | Amazilia Hummingbird | Olivaceous Thornbill |
|---|---|---|
| Scientific Name | Amazilis amazilia | Chalcostigma olivaceum |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | — | 16.3 cm (6.4 in) |
| Weight | 5.066666666666666 g (0.18 oz) | 7.3999999999999995 g (0.26 oz) |
| Diet | Feeds on nectar from flowering shrubs and epiphytes. Catches small insects and spiders to meet … | Nectarivore of high Bolivian and Peruvian páramo; short bill accesses small open flowers. Gleans insects … |
| Clutch Size | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Amazilia Hummingbird only
Olivaceous Thornbill only
Song & Call Comparison
Amazilia Hummingbird
Buzzy, high-pitched trill with insect-like quality; rapid sustained vibration barely distinguishable from insects.
Olivaceous Thornbill
Buzzy, high-frequency trill with insect-like quality; sustained continuous vibration with rapid amplitude modulation.
Geographic Range & Migration
Amazilia Hummingbird
Found in arid coastal lowlands of western Peru and Ecuador. Resident in desert scrub and river valleys.
Olivaceous Thornbill
Widespread in high Andean puna grassland from Peru to Bolivia and northwestern Argentina. 3,200–4,800 m.
Conservation Status
Amazilia Hummingbird
Olivaceous Thornbill
About These Birds
Amazilia Hummingbird
A medium-sized hummingbird (9-10 cm) found in arid coastal lowlands of western Peru and Ecuador. Green plumage with variable rusty-orange underparts. Nectarivore of desert scrub, gardens, and river valleys. Adapted to arid Pacific environments.
Olivaceous Thornbill
A small hummingbird (11-12 cm) found in Andean puna and páramo from Peru to Bolivia at 3,500-4,800 m. Olive-green plumage with subtle throat iridescence. Nectarivore of high-altitude flowering plants. One of the drabbest thornbills. Tolerates extreme cold.