Build a Wren House!
often nest in bird houses. You can buy wren houses from gardening and
bird feeding stores, or you can build your own. To increase your chances
of getting a wren to nest in your box, set it 5 - 10 feet above the
ground, in a tree or near shrubbery. Wrens are the only birds likely
to nest in a dangling nest box, but they also select boxes that are
firmly anchored on a pole or fence post.
The most important thing to remember in building any nest box for House Wrens is to make the entrace hole hole no bigger than 1 1/8 inch. House Wrens can easily pass through a 1-inch hole, and making it just an eighth of an inch bigger allows chickadees in, too. If the hole is any bigger, House Sparrows can also get in. Many people love sparrows, but they often kill adults birds, and destroy their eggs and nestlings, to take over a nest box.
you provide more than one bird house? It won't necessarily get you
more wrens, but may increase your chances of at least one of your wren
houses being selected as a nest site. Male wrens build stick nests
in every spot they think might work for raising babies. But that doesn't
necessarily mean that eggs and baby wrens will ever live in there!
When a male attracts a female to his territory, he shows her all his
stick nests, and she picks her favorite one. If she doesn't choose
one of your bird houses at first, be patient. In most places, wrens
nest two or even three times in a season, and may well select your
nest box then, or maybe next year.