Olivaceous Thornbill vs Allen's Hummingbird
Chalcostigma olivaceum comparado con Selasphorus sasin
Side-by-Side Comparison
| Atributo | Olivaceous Thornbill | Allen's Hummingbird |
|---|---|---|
| Nombre científico | Chalcostigma olivaceum | Selasphorus sasin |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Trochilidae | Trochilidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| 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 … |
| Tamaño de la puesta | 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 conservación
Olivaceous Thornbill
Allen's Hummingbird
About These Birds
Olivaceous Thornbill
Picoespina olivácea (Chalcostigma olivaceum), 11 cm. Plumaje verde oliváceo general; garganta del macho con brillo verdoso; cola moderadamente larga. Habita en páramos arbustivos y bordes de bosque alto-andino de Perú y Bolivia. Se alimenta de néctar de flores alpinas.
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.