Funnytoday365 100Pcs Multi Color Plastic Fowl Leg Bands Bird Parrot Chicks Poultry Leg Clip Rings 10.5Mm 1 100 Numbered Identified them with different numbers. This identify ring can be used for carrier pigeon. Use for identifying similar looking birds with easy Use them to keep different breeds apart, mark suspected cockerels, separating hatches The rings split in half on a small hinge making them easier to put on the leg