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Provide ventilation at top of sides and drainage holes in bottom.

Box should open from top, side or front to allow for monitoring.

Bottom of entrance hole should be approximately 6 inches above the floor.

Entrance hole diameter of 1.5 inches for the Eastern Bluebirds, slightly larger for the Mountain/Western Bluebirds.

Inside dimensions a minimum of 4″x4″ (4″x5″ preferable) for the Eastern Bluebird, 5″x5″ for the mountain/western bluebirds.

There are many styles and shapes of bluebird boxes.

If you don’t get bluebirds in some boxes (or too many House Wrens) after a couple seasons, consider moving them to another more open location.

They will tolerate each other but not pairs of the same species.

Consider placing boxes in pairs, either back to back or within 4-6 feet of each other to encourage Tree Swallows and bluebirds to both nest.

This distance can be reduced if there are trees/shrubs/landscape that break up the line of sight between the boxes.

Place boxes 100 yards from each other to minimize bluebird territory overlap.

Do not face the box opening INTO the prevailing wind direction.

Try to face the box opening towards a tree or bush to give the fledglings something to fledge to up off the ground.

Download the pdf Predator Control on Nest Box Trail. Place a guard on the pole to keep out raccoons, snakes and other potential predators.Download the pdf NYSBS Bluebird Nesting Boxes Mount the box 4 to 6 feet high on a metal pole.Keep away from the edge of woods as house wrens will fill them up with sticks.Place the box in as open an area as possible with perches available do not mount on trees or buildings.They do not generally nest in cities or suburbs. Bluebirds nest in open fields or orchards.Eastern Bluebirds generally return north to the State of New York in early to mid-March.Įastern Bluebird Distribution Map – From Birds of North America Online, maintained by the Cornell Lab of Ornithology.The harder the winter, or the more scarce food, water and shelter are, the further south they will migrate until winter breaks. Eastern Bluebirds in the north will remain as far north during the winter as they can as long as they can find food, water and shelter.The Eastern Bluebird is found throughout the Eastern U.S.They are a light reddish-brown on the chin and breast. Adult females are a duller blueish-gray color on the head, dull brown on their back and blue on the tail and wings.They are a reddish-brown color on their chin and breast. Adult males are a dark blue color on their head, back, wings and tail.The Eastern Bluebird is a member of the thrush family, as is the robin.