Hello i have a almost 4 month old Pekin duck named Quackers. He and his brother were attacked by a hawk almost 3 weeks ago unfortunately we lost Peepers that day however Quakers only lost an eye or so we thought originally i have kept the wound clean and for some reason he is completely blind and deaf even though the attack was only to his left eye. he seemed to be doing much better however over the last 2 days he has been turning his neck almost completely uunside down and when bathing him he practically drowned himself almost flipping upside down it is almsot like he is having spasms. He eats and drinks fine but now he is just bonking himself inside into the wall constantly and has neck completely twisted upside down. What do i do? Is it time to put him down? I dont want him to suffer anymore than he already has...