Olivaceous Thornbill vs Rufous-booted Racket-tail
Chalcostigma olivaceum comparado com Ocreatus addae
Side-by-Side Comparison
| Atributo | Olivaceous Thornbill | Rufous-booted Racket-tail |
|---|---|---|
| Nome científico | Chalcostigma olivaceum | Ocreatus addae |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Trochilidae | Trochilidae |
| Estado de conservação | Least Concern | Not Evaluated |
| Comprimento | — | — |
| Envergadura | 16,3 cm (6.4 in) | — |
| Peso | 7,3999999999999995 g (0.26 oz) | 3,0 g (0.11 oz) |
| Dieta | Nectarivore of high Bolivian and Peruvian páramo; short bill accesses small open flowers. Gleans insects … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Tamanho da postura | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Olivaceous Thornbill only
Rufous-booted Racket-tail only
Nenhum
Song & Call Comparison
Olivaceous Thornbill
Buzzy, high-frequency trill with insect-like quality; sustained continuous vibration with rapid amplitude modulation.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Olivaceous Thornbill
Widespread in high Andean puna grassland from Peru to Bolivia and northwestern Argentina. 3,200–4,800 m.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Estado de conservação
Olivaceous Thornbill
Rufous-booted Racket-tail
About These Birds
Olivaceous Thornbill
Espigueiro-oliváceo (Chalcostigma olivaceum), 9–10 cm. Plumagem oliváceo-esverdeada, garganta com gorget pequeno e colorido variável entre roxo e verde. Habita páramos e matorrales de altitude nos Andes do Peru e Bolívia. Alimenta-se de néctar de flores de altitude e pequenos insetos.
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.