Hence, they will last longer. Bluebird house hunters are looking for the same qualities in their new homes, too. There are several places to hang bluebird feeders to attract bluebird s. ... Place bluebird nests on the east side of a tree, fence, or house to provide shade during the hot afternoon sun. Since bluebirds defend large feeding territories around their nests—one or two acres in early spring—they don’t want to nest close to other bluebirds. If competitor birds do take over a bluebird house, erecting a second bluebird house within 20 to 25 feet of the first one will often let bluebirds settle into the new home and leave the old one to competitor birds. Birdhouses placed under overhangs will see less sun and rain. Tree Swallow pairs won’t nest close to one another either. The adults like branches nearby so they can keep a watch over their family. Although bluebird houses can be spaced an equal distance apart, the better option is to set up your bluebird houses in pairs. Birds nest in trees, so what could be more natural, right? Install that new house on a pole or a sturdy 4×4 post. Bluebirds and purple martins prefer birdhouses out in the open. Placing two houses close to each other gives bluebirds a good chance of claiming a house and raising a brood without another species taking it first or even puncturing the bluebirds' eggs and demolishing their nest. Raccoons, snakes and cats can be big trouble for bluebirds. However, most other birds prefer concealed or camouflaged areas. That’s just what raccoons, squirrels, cats, and other predators want you to think. More tips on hanging a birdhouse. Wrong! It’s tempting to mount a bluebird house on a tree. Even if it is not nesting season, birds may investigate the house, learn where it is, and possibly use it as shelter. So reduce competition by installing pairs of bluebird nest boxes no more than fifteen to twenty feet apart. Place nesting boxes close to open areas; Don’t place bluebird houses closer than 125 feet from other bluebird houses. If you only want to provide houses for nesting, putting them up in late winter or very early spring will ensure they are available for even the earliest nesting species.