Bluebirds are back from the brink thanks to human interventions

The eastern bluebird population was once in rapid decline because of a perfect storm of factors, but today their population has recovered well and these birds are a common sight once again.

Birdhouse Builds, PDF, Birds

Birds Brought Back from the Brink – Biodiversity Heritage Library

Bluebird recovery cause for pride and joy at annual conference of

Montana birding: Anaconda bluebird sighting an example of

Bluebird Seasons: Witnessing Climate Change in My Piece of the

Would birds kill humans if they could? - Quora

Oklahoma Bluebird Society

Bluebirds Make a Comeback

Bluebird Seasons: Witnessing Climate Change in My Piece of the

Lockport Prairie Nature Preserve

True Colors: How Birds See the World