We seasonally have a pair of bluebirds build a nest under the eve of our house that I allow because I enjoy having them around. They are pretty creatures with an appetite for insect pests. The first sighting of bluebirds is considered a sign of Spring.
Bluebirds (Sialia sialis) are easily identified by their sky-blue back and rusty colored throat and breast (they are cousins to the robins). Females are not as brightly colored as males. The birds are most often seen sitting on an isolated perch or hunting for insects on the ground.