I have a two year old cockatiel named Aussie. Three days ago, was playing with a bell that was left on his cage, which unknown to me, the dinger had fallen off and was left with just metal wire hanging in the bell. He was playing with it and ended up getting the wire caught in his mouth. In the process of having the bell stuck on his head, he fell off the top of his cage with his head stuck inside the bell (about 4ft). He was screeching and flailing on the ground when my mom picked him up and proceeded to separate the wire from the bell and then removed the wire from his mouth without trouble. The trouble now is that he is not talking with people and is very lethargic (he is mainly in sleeping position with his head tucked back). He eats less than normal and when he does he does it reluctantly. We know that the wire cut his tongue which is now scabbed over. He will sit on shoulders and let himself be pet, but is very passive. Is this normal behavior for a traumatized bird or does he need a vet? Please Help!