Bluebird

Bluebirds
Eastern bluebird (Sialia sialis)
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Passeriformes
Family:Turdidae
Genus:Sialia
Swainson, 1827
Species

The bluebirds are a group of medium-sized, mostly insectivorous or omnivorous bird in the order of Passerines in the genus Sialia of the thrush family (Turdidae). Bluebirds are one of the few thrush genera in the Americas. They have blue, or blue and rose beige, plumage. Female birds are less brightly colored than males, although color patterns are similar and there is no noticeable difference in size between the two sexes.

Species

Bluebirds species include:

ImageScientific nameCommon NameDistribution
Sialia sialisEastern bluebirdsouthern Canada to the Gulf states, and southeastern Arizona to Nicaragua
Sialia mexicanaWestern bluebirdCalifornia, the southern Rocky Mountains, Arizona, and New Mexico in the United States, and as far south as the states of Oaxaca and Veracruz in Mexico
Sialia currucoidesMountain bluebirdwestern North America

Behavior

Mountain bluebird

Bluebirds are territorial and prefer open grassland with scattered trees. This is similar to the behaviour of many species of woodpeckers. Bluebirds can typically produce between two and four broods during the spring and summer (March through August in the Northeastern United States). Males identify potential nest sites and try to attract prospective female mates to those nesting sites with special behaviors that include singing and flapping wings, and then placing some material in a nesting box or cavity. If the female accepts the male and the nesting site, she alone builds the nest and incubates the eggs.

Predators of young bluebirds in the nests can include snakes, cats, and raccoons. Bird species competing with bluebirds for nesting locations include the common starling, American crow, and house sparrow, which take over the nesting sites of bluebirds, killing young, smashing eggs, and probably killing adult bluebirds.[1]

Male western bluebird

Bluebirds are attracted to platform bird feeders, filled with grubs of the darkling beetle, sold by many online bird product wholesalers as mealworms. Bluebirds will also eat raisins soaked in water. In addition, in winter bluebirds use backyard heated birdbaths.

By the 1970s, bluebird numbers had declined by estimates ranging to 70% due to unsuccessful competition with house sparrows and starlings, both introduced species, for nesting cavities, coupled with a decline in habitat. However, in late 2005, Cornell University's Laboratory of Ornithology reported bluebird sightings across the southern U.S. as part of its yearly Backyard Bird Count, a strong indication of the bluebird's return to the region. This upsurge can be attributed largely to a movement of volunteers establishing and maintaining bluebird trails.

In the garden

Of all the birds a gardener could choose to attract, the bluebird is the quintessential helpful garden bird. Gardeners go to extreme lengths to attract and keep them in the garden for their advantageous properties. Bluebirds are voracious insect consumers, quickly ridding a garden of insect pests.[2]

In culture

Iroquois

In traditional Iroquois cosmology, the call of the bluebird is believed to ward off the icy power of Sawiskera, also referred to as Flint, the spirit of the winter. Its call caused Sawiskera to flee in fear and the ice to recede.[3]

As a symbol in songs

Songwriters have portrayed the bluebird as a muse, as in the song "Voices in the Sky" by the British rock group The Moody Blues, from their 1968 album In Search of the Lost Chord.[4]

See also

Footnotes

  1. ↑ Gowaty, Patricia Adair (1984). "House Sparrows Kill Eastern Bluebirds" (PDF). Journal of Field Ornithology. 55 (3): 378–380. JSTOR 4512922.
  2. ↑ "The Self-Sufficient Gardener Episode 109 Bluebirds". Theselfsufficientgardener.com. 2011-07-20. Retrieved 2012-06-16.
  3. ↑ Canadian Climate of Mind: Passages from Fur to Energy and Beyond By Timothy B. Leduc p.192-195
  4. ↑ The Best of The Moody Blues; information accompanying the CD.
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