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Eastern Bluebird

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The bluebirds are a North American[1] group of medium-sized, mostly insectivorous or omnivorous birds 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.

Bluebirds lay an average of 4 to 6 eggs per clutch. They will usually brood two or three times in a year. Bluebirds nest from March all the way through August.

Bluebirds 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.

Taxonomy and species

The genus Sialia was introduced by the English naturalist William John Swainson in 1827 with the eastern bluebird (Sialia sialis) as the type species.[2][3] A molecular phylogenetic study using mitochondrial sequences published in 2005 found that Sialia, Myadestes (solitaires) and Neocossyphus (African ant-thrushes) formed a basal clade in the family Turdidae. Within Sialia the mountain bluebird was sister to the eastern bluebird.[4]

The genus contains three species:[5]

Genus SialiaSwainson, 1827 – three species
Common name Scientific name and subspecies Range Size and ecology IUCN status and estimated population
Mountain bluebird


Male
{{{image-alt2}}}
Female

Sialia currucoides
(Bechstein, 1798)
Western North America
Map of range
Size:

Habitat:

Diet:
 LC 


Western bluebird


Male
{{{image-alt2}}}
Female

Sialia mexicana
(Swainson, 1832)

Six subspecies
California, 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
Map of range
Size:

Habitat:

Diet:
 LC 


Eastern bluebird


Male
{{{image-alt2}}}
Female

Sialia sialis
(Linnaeus, 1758)

Seven subspecies
East-central southern Canada to the US Gulf states, and southeastern Arizona to Nicaragua
Map of range
Size:

Habitat:

Diet:
 LC 



Behavior

Mountain bluebird

Bluebirds are territorial and prefer open grassland with scattered trees. This is similar to the behavior 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.[6]

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. 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

Bluebirds' consumption of insects make them popular with gardeners.[7]

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.[8]

As a symbol in songs

"Bluebird of Happiness" is a song composed in 1934 by Sandor Harmati, with words by Edward Heyman and additional lyrics by Harry Parr-Davies.

"(There'll Be Bluebirds Over) The White Cliffs of Dover" was composed in 1941 by Walter Kent to lyrics by Nat Burton looking forward to a time when World War II would be over. Burton was unaware that the bluebird was not indigenous to England. Vera Lynn popularised the song with her performances to the troops.

"Bluebird" is a song written by Stephen Stills and recorded by the rock band Buffalo Springfield in 1967. It contains the lyrics "There she sits aloft at perch. Strangest color blue."

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.[9]

"Birdhouse in Your Soul", the 1989 ode to a nightlight by the band They Might Be Giants, references a “bluebird of friendliness” and a “blue canary” in its lyrics.

The titular bluebird of the song "Birds", from the 2013 album Government Plates by the Sacramento-based experimental hip hop group Death Grips, is thought to be referencing Charles Bukowski's poem "Bluebird", wherein bluebirds represent vulnerability that Bukowski felt as a result of child abuse from his father.[10]

"Bluebird" is the title of Miranda Lambert's Country chart-topping late 2019 single from her album Wildcard . The song was co-written by Lambert who has said the song was a reference to the hope and optimism associated with bluebirds. The accompanying video for the song features a mountain bluebird.

See also

References

  1. ^ "What About the Other Bluebirds?". National Wildlife Federation. 1993-02-01.
  2. ^ Swainson, William John (1827). "A synopsis of the birds discovered in Mexico by W. Bullock, F.L.S. and Mr. William Bullock jun" (PDF). Philosophical Magazine. New Series. 1: 364–369 [369]. doi:10.1080/14786442708674330.
  3. ^ Mayr, Ernst; Paynter, Raymond A. Jr, eds. (1964). Check-List of Birds of the World. Vol. 10. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 83.
  4. ^ Klicka, J.; Voelker, G.; Spellman, G.M. (2005). "A molecular phylogenetic analysis of the "true thrushes" (Aves: Turdinae)". Molecular Phylogenetics and Evolution. 34 (3): 486–500. doi:10.1016/j.ympev.2004.10.001. PMID 15683924.
  5. ^ Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (2020). "Thrushes". IOC World Bird List Version 10.2. International Ornithologists' Union. Retrieved 10 September 2020.
  6. ^ Gowaty, Patricia Adair (1984). "House Sparrows Kill Eastern Bluebirds" (PDF). Journal of Field Ornithology. 55 (3): 378–380. JSTOR 4512922.
  7. ^ "The Self-Sufficient Gardener Episode 109 Bluebirds". Theselfsufficientgardener.com. 2011-07-20. Retrieved 2012-06-16.
  8. ^ Canadian Climate of Mind: Passages from Fur to Energy and Beyond By Timothy B. Leduc p.192-195
  9. ^ The Best of The Moody Blues; information accompanying the CD.
  10. ^ "That / wants to get out / but I'm too tough for him, / I say, stay in there, I'm not going / to let anybody see / you". Genius.com. Retrieved 17 December 2021.

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