Why are bluebirds blue? - Nature Alberta

The blue feathers of a bluebird are blue for a special reason!

Bluebird - Wikipedia

Mountain Bluebird — Mountain Bluebird Trails Conservation Society

Eastern Bluebirds: The Little Blue Bomber - Nature Canada

Mountain Bluebird Overview, All About Birds, Cornell Lab of

Blue Jay Identification, All About Birds, Cornell Lab of Ornithology

Where to catch a glimpse of a mountain bluebird in Alberta this

Mountain Bluebird Trails Conservation Society - Southern Alberta

Eastern Bluebirds more than a pretty visitor

20 Most Beautiful Types of Blue Birds (With Pictures)

Where to catch a glimpse of a mountain bluebird in Alberta this

Mountain Bluebirds — Nesting Time!

Nesting Behaviors of Eastern Bluebirds in the USA

Hinterland Who's Who - Mountain Bluebird