One type of birdhouse with the opening at the bottom.

Birdhouse

One type of birdhouse with the opening at the bottom.

One type of birdhouse with the opening at the top.

Birdhouse

One type of birdhouse with the opening at the top.

One type of birdhouse modeled to look like an actual house.

Birdhouse

One type of birdhouse modeled to look like an actual house.