However, this technology is not economical or practical yet for most bird breeders. So, look for a band when buying a bird. Look up the type of bird, eg. The following website for the National Cage Bird Show lists contacts for many bird societies. This identifies the importer and his facility.
Large importers have more than one facility and more than one code.
This is part of the bird's individual identification code which also contains three additional numbers. The United States Department of Agriculture also runs government quarantine stations. Many of these stations were closed some years ago, but the banded birds are still around.