Unknown Bird Help!

Hi, two days ago i spotted a bird in my garden and I have no idea what it is! And after spending the past few days googling i'm still none the wiser!

It is a similar size to a blackbird maybe a little larger, its head and tail are black and his mid-section is brown. He also has white rings around his eyes, white tips on his tail and white tips on his wings with, he is symetrical. He also has pale legs and on one of his legs he has a blue ring? I'm not sure if he is ringed or if its stuck on his leg, he also has a distinctive call.