Example: air traffic controller
Bluebird Nest Box Information
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How To Build Your Birdhouses - Wintu Audubon Society
www.wintuaudubon.orgfrom seeping between sides and floor and then into the nest. Recess the floorboard 1/4” up from the bottom of the sides to help prevent deterioration caused by moisture. Do not use tin cans, milk cartons or metal as nest box materials. Metals heat up …