hey I'm currently searching in a small town called out side Antwerp, Belguim. I have found two bird rings (you know those things round for the legs) both with ID numbers with "Brussels Museum" written on them.They were about three hundred metres apart. The one is slightly larger then the other. My theory so far is that they are from racing pigions. But does Brussels Museum have a flock and is so what is the chance of two dieing in the same area?