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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 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.
Two days later, he saw bluebirds in his yard for the first time in 36 years. [2] With the help of the local Ruritan club, Finch founded the nonprofit Homes for Bluebirds, Inc. in 1973. [2] That organization built and distributed over 60,000 bluebird boxes by the mid-1990s and continues to sell them at cost. [8]
Dogs bite around 4 million people each year in spite of their relationships with humans with some breeds responsible for most of these attacks. Many dog breeds were developed for aggressive tasks ...
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Results found that significantly more eggs were fertilised by the extra-pair male than expected proportionally from just one copulation versus many copulations with the other male. [23] EPC proportion varies between different species of birds. [1] For example, in eastern bluebirds, studies have shown that around 35% of offspring is due to EPC. [3]
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