Hello, I noticed a small white bird in my garden this morning. It was raining and the bird was casually hopping about and singing. It was particularly concerned when I approached it so I picked it up and took it inside. There is ring tag on the ankle and the bird doesn't appear to be injured as it flies across the room at will but it quite content to sit and eat the food that i just bought it. What should I do next? Who should I call to find its owner? Stoke on Trent U.k