I wouldn't try contacting his (maybe) people. They may worry that you will lead the cops to them. I'm sure that's why they haven't responded. Be careful please. I am sitting here trying to think of the most enticing thing to eat in this world, that maybe he will want to nibble on. I don't think Roosters care for ice cream tho. I don't know if chickens have a sense of smell but, I know my friends birds love sardines (ick!!)