Is there any position worn on the pigeon's feet?

Generally, the ring worn on the feet of the pigeons does not have a positioning function, just a simple number.Of course, there is a special positioning ring now. You can understand its movement and know where it flew, but the meaning is not great.The pigeon returning to the nest is a kind of nature, so as long as it is not disturbed by external factors, it will fly home sooner or later. It can only be found in short -distance positioning. It is impossible to find too long.