Wrens, bluebirds and tree swallows are the birds most commonly attracted to single-unit, enclosed bird houses. Each species prefers certain locations and habitats in which to nest and rear its young.
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They prefer houses with small entry holes, like a wren house.
Bluebirds sometimes build more than one nest, as a diversion to predators.
They will nest in tree cavities.
Not usually, bluebirds normally nest closer to the ground than martins.
Bluebirds prefer open country, pastures, farmlands, clearings.
Bluebirds spend much of their time foraging for food. When they have babies in the nest, they spend much of their time caring for them.
They can easily fit out the entrance hole.
From March to June. In the south, they nest earlier, and may raise two broods.
They would prefer meadows.
Yes, then clean the box.
Sometimes bluebirds face competition with other birds over nesting sites. Another problem bluebirds have is a lack of natural habitat. In areas that are more developed there are less natural cavities for them to nest in.
Bluebirds prefer an insectivore diet.
They give many bluebirds a place to live at the same time. The population can increase because of the amount of bluebirds that can nest in that area.