Olivaceous Thornbill vs Allen's Hummingbird
Chalcostigma olivaceum comparado com Selasphorus sasin
Side-by-Side Comparison
| Atributo | Olivaceous Thornbill | Allen's Hummingbird |
|---|---|---|
| Nome científico | Chalcostigma olivaceum | Selasphorus sasin |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Trochilidae | Trochilidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 16,3 cm (6.4 in) | 8,1 cm (3.2 in) |
| Peso | 7,3999999999999995 g (0.26 oz) | 3,1500000000000004 g (0.11 oz) |
| Dieta | Nectarivore of high Bolivian and Peruvian páramo; short bill accesses small open flowers. Gleans insects … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| Tamanho da postura | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Olivaceous Thornbill
Buzzy, high-frequency trill with insect-like quality; sustained continuous vibration with rapid amplitude modulation.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Olivaceous Thornbill
Widespread in high Andean puna grassland from Peru to Bolivia and northwestern Argentina. 3,200–4,800 m.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Estado de conservação
Olivaceous Thornbill
Allen's Hummingbird
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.
Allen's Hummingbird
A small hummingbird (8-9 cm) breeding along the Pacific coast from Oregon to southern California. Males have an orange-red throat and rufous flanks. Closely related to Rufous Hummingbird. Partial migrant; some populations resident on Channel Islands. Named after Thomas Allen.