My Silkie Rooster has swallowed a piece of string with something attached to the end. I called my vet and they suggested to let it work its course and cut off the excess string out of its mouth. I have done that. The roo also had some blood on its comb and the string was bloody. I have put the roo in a dog crate to separate it to avoid any pecking. Is there anything else I can do? Poor thing.