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CLOSED BANDS Closed bands are found on birds which have been banded as babies.
This usually means that they are captive bred by a breeder. They are made of stainless steel, aluminum or plastic and come in a variety of colors and sizes .
Removal can only be accomplished by cutting the band off.
This permanency makes closed bands a more reliable method of identifying a bird than open bands which can be opened or removed.
Breeders buying older birds can trace the origins of the birds to ensure that potential pairings are unrelated or to identify certain traits.
Open bands should be checked every few months to make sure they are closed tightly.
Over time the gap in between the band can slowly get larger allowing a bird to maybe get caught on a cage wire and not be able to get lose.
Keeping the gene pools diverse, pairing unrelated birds, breeding for traits or mutations are all important issues.
Band numbers are used by breeders to identify and keep records on their birds.