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Rufous Hummingbird (Selasphorus rufus) - Wiki
Subject: Rufous Hummingbird (Selasphorus rufus) - Wiki
Rufous Hummingbird (Selasphorus rufus) on Saltspring Island.jpg
Resolution: 1460x1080 File Size: 956369 Bytes Date: 2007:04:15 13:18:20 Camera: Canon PowerShot S3 IS (Canon) F number: f/3.5 Exposure: 1/500 sec Focal Length: 72000/1000 Upload Date: 2007:09:28 16:10:23

Rufous Hummingbird (Selasphorus rufus) - Wiki


Rufous Hummingbird
From Wikipedia, the free encyclopedia

[Photo] Hovering Rufous Hummingbird (Selasphorus rufus) on Saltspring Island. Date: 15 April 2007. Photo by http://en.wikipedia.org/wiki/User:H

The Rufous Hummingbird (Selasphorus rufus) is a small hummingbird, about 8 cm long with a long, straight and very slender bill. The female is slightly larger than the male.

The adult male, shown in the photo, has a white breast, rufous face, upperparts, flanks and tail and an iridescent orange-red throat patch (gorget). Some males have some green on back and/or crown. The female has green upperparts, white underparts, some iridescent orange feathers in the center of the throat, and a dark tail with white tips and rufous base. Females and the rare green-backed males are extremely difficult to differentiate from Allen's Hummingbird.

Their breeding habitat is open areas and forest edges in western North America from southern Alaska to California. This bird nests further north than any other hummingbird. The female builds a nest in a protected location in a shrub or conifer. The male aggressively defends feeding locations within his territory. The same male may mate with several females.

They are migratory, many of them migrating through the Rocky Mountains and nearby lowlands in July and August to take advantage of the wildflower season there. They may stay in one spot for considerable time, in which case the migrants, like breeding birds, often aggressively take over and defend feeding locations. Most winter in wooded areas in the Mexico state of Guerrero, traveling over 2,000 miles by an overland route from its nearest summer home--a prodigious journey for a bird weighing only three or four grams.

This is the western hummingbird most likely to stray into eastern North America. There has been an increasing trend for them to migrate east to winter in the eastern United States-(Florida), rather than south to Central America. (They do arrive at the Turks and Caicos Islands.) This trend is the result of increased survival with the provision of artificial feeders in gardens. In the past, individuals that migrated east in error would usually die, but now they often survive, and their tendency to migrate east is inherited by their offspring. Provided sufficient food and shelter is available, they are surprisingly hardy, able to tolerate temperatures down to at least -20°C.

These birds feed on nectar from flowers using a long extendable tongue or catch insects on the wing.

Because of their small size, they are vulnerable to insect-eating birds and animals. These birds require frequent feeding while active during the day and become torpid at night to conserve energy.

http://en.wikipedia.org/wiki/Rufous_Hummingbird
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