I would consider finding 2 Birdhouses in the forest not a big deal, but these were deep in the Ouachita National Forest here in Arkansas. The nearest residence from these birdhouses is about 2 miles away and that’s my place. Both were down on the forest floor at the bottom of a ridge. They both were also 50 steps from each other. You can see in the first photo where the birdhouse was attached to a tree at one time. This birdhouse was laying face down in the wet leaves and this is why you can see white mold on the front. I don’t see anything wrong with placing Birdhouses out in the forest as long as they are placed in a way to protect the birds from predators. (I was told to avoid heavily wooded areas for birdhouses, especially for Bluebirds) I just think finding them so far from a residence a little surprising. I also would think the National Forest people would frown on screwing or nailing things like this to a tree.
The best time to put up a new birdhouse is in the fall or winter so that birds will have plenty of time to locate them before the breeding season.
A birdhouse makes a great roosting house in winter. Eastern bluebirds will pile into houses to spend cold nights.
More than 24 species of birds nest in birdhouses, including songbirds, swallows and owls.
Tree swallows like birdhouses attached to dead trees. Prothonotary warblers only nest in boxes on a lake or pond. Birdhouses on fence posts along open fields attract bluebirds. Owls and kestrels also prefer boxes on the edges of fields or woods so they can easily leave the house to hunt. Wood ducks use houses near water as the ducklings jump from the nest into the water within hours of birth.