Black-backed Thornbill vs Ruby-throated Hummingbird
Ramphomicron dorsale so với Archilochus colubris
Side-by-Side Comparison
| Thuộc Tính | Black-backed Thornbill | Ruby-throated Hummingbird |
|---|---|---|
| Tên Khoa Học | Ramphomicron dorsale | Archilochus colubris |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Near Threatened | Least Concern |
| Chiều Dài | — | 8,5 cm (3.3 in) |
| Chiều Dài Sải Cánh | 11,0 cm (4.3 in) | 11,0 cm (4.3 in) |
| Khối Lượng | 3,5 g (0.12 oz) | 3,1 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of high montane scrub and páramo; short bill suits small compact flowers. Gleans tiny … | Nectar from tubular flowers, supplemented with small insects and spiders for protein. Feeds at over … |
| Số Trứng | -- | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Black-backed Thornbill only
Ruby-throated Hummingbird only
Không
Ruby-throated Hummingbird
Deciduous and mixed forests, woodland edges, gardens, and parks with flowering plants. Migrates across the Gulf of Mexico.
Song & Call Comparison
Black-backed Thornbill
Soft, sibilant hissing trill; gentle continuous buzz with slight pulsing quality during slow hover near blossoms.
Ruby-throated Hummingbird
Soft, high-pitched chattering and twittering 'chee-dit'. Also produces a thin 'tik' call in flight. Wing beats create an audible high-pitched humming buzz during hovering.
Geographic Range & Migration
Black-backed Thornbill
Endemic to the Sierra Nevada de Santa Marta, Colombia, in high-elevation scrub and páramo. 1,800–3,500 m. Found nowhere else.
Ruby-throated Hummingbird
Eastern North America from southern Canada to the Gulf Coast. Winters in Central America and southern Mexico.
Tình Trạng Bảo Tồn
Black-backed Thornbill
Ruby-throated Hummingbird
How to Tell Them Apart
Black-backed Thornbill
Coppery Emerald (alt): males with glittering purple-magenta gorget; metallic green above; white pectoral tufts; females spotted below
Ruby-throated Hummingbird
Metallic green upperparts and greyish-white underparts. Males have a brilliant iridescent ruby-red gorget that appears black in poor light. Females lack the gorget.
Long, straight, thin black bill adapted for probing flowers
About These Birds
Black-backed Thornbill
A tiny hummingbird (7-8 cm) endemic to the Santa Marta Mountains of northern Colombia at 3,000-4,600 m. Dark back, tiny bill, and white underparts. Nectarivore of high-altitude páramo. Classified as Vulnerable due to restricted mountain-top habitat.
Ruby-throated Hummingbird
The ruby-throated hummingbird is the only breeding hummingbird in eastern North America. These tiny birds beat their wings about 53 times per second and can fly backwards, sideways, and even briefly upside down. They make an extraordinary non-stop 800 km crossing of the Gulf of Mexico during migration.