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The eastern bluebird (Sialia sialis) is a small North American migratory thrush found in open woodlands, farmlands, and orchards. The bright-blue breeding plumage of the male, easily observed on a wire or open perch, makes this species a favorite of birders.
The genus Sialia was introduced by the English naturalist William 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.
An Eastern Bluebird checks out a feeder. ... That way all of the eggs will hatch on the same day and the young will all grow and develop on the same schedule so that they all fledge at the same time.
The western bluebird can be readily distinguished from the two other species in the bluebird genus. The western bluebird has a blue (male) or gray (female) throat, the eastern bluebird (Sialia sialis) has an orange throat, and the mountain bluebird (Sialia currucoides) lacks orange color anywhere on its body.
The default color of vertebrate eggs is the white of the calcium carbonate from which the shells are made, but some birds, mainly passerines, produce colored eggs. The pigments biliverdin and its zinc chelate give a green or blue ground color, and protoporphyrin produces reds and browns as a ground color or as spotting.
Eastern bluebird. Order: Passeriformes Family: Turdidae. The thrushes are a group of passerine birds that occur mainly but not exclusively in the Old World. They are plump, soft plumaged, small to medium-sized insectivores or sometimes omnivores, often feeding on the ground. Many have attractive songs. Eastern bluebird, Sialia sialis
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Eastern bluebird. Order: Passeriformes Family: Turdidae. The thrushes are a group of passerine birds that occur mainly but not exclusively in the Old World. They are plump, soft plumaged, small to medium-sized insectivores or sometimes omnivores, often feeding on the ground. Many have attractive songs. Ten species have been recorded in Illinois.