While it is okay to paint the outside of a bird house, do not paint the interior surfaces or the inner rim of the entrance hole. Furthermore, use only environmentally safe paints, stains or varnishes on the outside and avoid any lead_based paints that can poison birds from fumes or ingestion. Choose a bird house design with the proper interior dimensions for the desired residents: Too small of a house may cause growing birds to smother, while too large of a house will not be attractive to nesting parents. Smaller birds could also become too chilled in a larger house if they are not huddled together when needed.
Many birders enjoy having bird houses in their backyard to watch bird families as eggs are laid, chicks are hatched and fledglings are raised. It can be devastating, however, when tragedy befalls those feathered families, and hazards can come in many forms. Predators, poor climate and illness are just a few threats can all take a toll on backyard bird populations. These dozen tips for safer bird house designs can help turn the odds in favor of nesting birds’ survival by minimizing the greatest risks.