Nature's Way Bluebird Box House Color:Cedar Hyaluronic Acid (Sodium)(Fermented from Corn):

Hyaluronic Acid (Sodium)(Fermented from Corn): 150mg

It also helps prevent injury when used on healthy lower legs

and freeze-proof than plastic

Airstream ears

Nature's Way Bluebird Box House Color:Cedar Hyaluronic Acid (Sodium)(Fermented from Corn):Made with solid cross ply bamboo which is resistant to mold, bacteria and squirrels or insect and rot resistant premium cedar. Air vents allow for maximum air ventilation through wall and floor openings. Clean out doors provide easy access for cleaning and bird viewing. Elevated mesh floor. Durable rust free galvanized wire mesh predator guard extends entrance hole to protect against predators.