We put this bird house in the orchard last year and were delighted when a pair of tree swallows made it their home. Our couple returned this year; we couldn’t be happier.
We have a 2nd bird house on the opposite side of the orchard near the sheep, and a lovely pair of bluebirds seem to have taken up residence there.
Per the Audubon website, “The popularity of the bluebird has been a boon to the Tree Swallow, which nests in holes of exactly the same size, and has taken advantage of bluebird houses over much of North America. In regions with no such ready supply of artificial nest sites, the swallows must compete with other cavity-nesting birds, arriving early in spring to stake out territories.”
How marvelous that we have both!