Meet Mountain Bluebird, A Breathtaking Little Bird With Sky Blue Plumage (Pics & Video)

Mountain bluebirds are cavity nesters and can become very partial to a nest box, especially if they have successfully raised a clutch. They may even reuse the same nest, though not always. Mountain bluebirds will not abandon a nest if human activity is detected close by or at the nest. Because of this, they can be easily banded while they are still in the nest.