Heat & Cold: Beat It - Sialis.org - Bluebird Information and Resources
Perky-Pet 16 in. Transparent Squirrel Guard- Protective Dome Cover for Hanging Bird Feeders 340 - The Home Depot
zbestvalue - Bird Heat Shield Kits
zbestvalue - Bird Heat Shield Kits
Nestbox Builder article
Amazon.com: DutchCrafters Gilbertson Pole Mount Bird House with Removable Roof for Wild Birds, Plastic Poly - Amish Made in America (Bluebird - 1 1/2") : Patio, Lawn & Garden
Free Bluebird House Plans Keeps Nestlings Cool
NestWatch | Tips for High Heat - NestWatch
zbestvalue - Bird Heat Shield Kits
Nestbox Heat Shield Kit, BV-HEATSHIELD at TMB Studios