Why Are Bluebirds Blue?

It's a trick of the light!

Bluebirds - Ornithology

Bird of the Week: Indigo Bunting – Huron-Clinton Metroparks

Bluebird 101: All About Bluebirds - Expedition Wildlife

Bluebird Facts – South Carolina Bluebird Society

Bluebirds vs. Blue Jays - Not the Same Bird - Nest Hollow

weekend reading: the blue in bluebirds; tick research; a doll of a d.i.y. house - A Way To Garden

Mountain Bluebird Trails Conservation Society - Southern Alberta

Site Index - - Bluebird Information and Resources

A Bird Once Almost GONE FOREVER! The Eastern Bluebird

3 Types of Bluebirds and How to Welcome Them Into Your Garden

Mountain Bluebird - Craters Of The Moon National Monument & Preserve (U.S. National Park Service)

It's Bluebird Time!

Western Bluebirds on My Street – Foothills Clusters Wildlife

Macaw´s blue feathers