Aviaries are large enclosures used to house birds. They are typically made of wire mesh and are often found in zoos, parks, and private homes. Aviaries provide a safe and comfortable environment for birds to live in, as well as providing them with plenty of space to fly and exercise. CAGES are smaller enclosures used to house birds, usually made of metal or plastic. They are often used in pet stores and private homes, and provide a secure and comfortable environment for birds to live in.