I was given a rooster yesterday who had been in a cat box for 10 hours with only popcorn to eat, yes wrong on many levels. Anyway he won't stand up. He is eating and drinking voraciously(I put rooster booster in his water) I felt his legs, they appear fine. He grips when I hold his claws. Any thoughts or suggestions on what to try next? I think I need to make him a sling so I'll search the best way to do that. Thanks in advance!!