Mountain Bluebird – Oklahoma City Audubon Society

Western Bluebird Study — OLYMPIC PENINSULA AUDUBON SOCIETY

Landscaping for Birds - Grit

Where to Birdwatch in Pennsylvania & Delaware

Summer Songbird Jewels of the Texas Gulf Coast - Two Shutterbirds

Oklahoma Bluebird Society

Oklahoma City Audubon Society – Promoting Birding in Oklahoma City and Central Oklahoma

Blessed with Blue Boothbay Register

Red-breasted Nuthatch – Oklahoma City Audubon Society

Woodlink Wooden Bluebird House - Model BB1 7.5 x

New York State Bird – Eastern Bluebird – – 50states

Backyard Birding — Santa Clara Valley Audubon Society