Got in from work tonight and my wee mam said she had received a strange phone call. Some guy with a Northumberland accent called the house looking for me, said he had his hands full of pigeon rings, told her one of the rings was SU 10 NE 40, he also said he got them from the falcons nest, she said to the guy i was working but if he left his number i would call back as soon as i got in, he hung up the phone!!! What's your best guess??