Ruby-throated hummingbird
| Ruby-throated hummingbird | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Apodiformes |
| Family: | Trochilidae |
| Genus: | Archilochus |
| Species: | A. colubris |
| Binomial name | |
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Archilochus colubris (Linnaeus, 1758) |
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| Summer-only range Winter-only range Migratory path | |
| Synonyms | |
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Trochilus colubris |
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Trochilus colubris
The ruby-throated hummingbird (Archilochus colubris) is a species of hummingbird that generally spends the Winter in Central America and migrates to Eastern North America for the Summer to breed. It is by far the most common hummingbird seen east of the Mississippi River in North America.
This hummingbird is from 7 to 9 cm (2.8 to 3.5 in) long and has an 8 to 11 cm (3.1 to 4.3 in) wingspan. Weight can range from 2 to 6 g (0.071 to 0.212 oz), with males averaging 3.4 g (0.12 oz) against the slightly larger female which averages 3.8 g (0.13 oz). Adults are metallic green above and greyish white below, with near-black wings. Their bill, at up to 2 cm (0.79 in), is long, straight, and very slender. As in all hummingbirds, the toes and feet of this species are quite small, with a middle toe of around 0.6 cm (0.24 in) and a tarsus of approximately 0.4 cm (0.16 in). The ruby-throated hummingbird can only shuffle if it wants to move along a branch, though it can scratch its head and neck with its feet.
The species is sexually dimorphic. The adult male has a gorget (throat patch) of iridescent ruby red bordered narrowly with velvety black on the upper margin and a forked black tail with a faint violet sheen. The red iridescence is highly directional and appears dull black from many angles. The female has a notched tail with outer feathers banded in green, black, and white and a white throat that may be plain or lightly marked with dusky streaks or stipples. Males are smaller than females and have slightly shorter bills. Juvenile males resemble adult females, though usually with heavier throat markings. The plumage is molted once a year, beginning in late summer.
The breeding habitat is throughout most of eastern North America and the Canadian prairies, in deciduous and pine forests and forest edges, orchards, and gardens. The female builds a nest in a protected location in a shrub or a tree. Of all hummingbirds in the United States, this species has the largest breeding range.
The ruby-throated hummingbird is migratory, spending most of the winter in southern Mexico and Central America, as far south as extreme western Panama, the West Indies, and southern Florida. During migration, some birds embark on a nonstop 900 mile journey across the Gulf of Mexico and Caribbean from Panama to Gulf Coast. The bird breeds throughout the eastern United States, east of the 100th meridian, and in southern Canada, particularly Ontario, in eastern and mixed deciduous and broadleaved forest. In winter, it is seen mostly in Mexico and southern Florida.
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Wikipedia