Ok, I picked this guy up about 10-12 days ago. Canker. He's a feral squeaker, so I started on flagyl. The canker was very bad, but it started resolving a few days ago and a huge chunk got dislodged from the throat. He wasnt eating much so I've been tube feeding but he's so skinny. I noticed when I tube fed him he couldn't take as much as I've known birds to take, the food would come up his throat and pour out his beak. So I'd stop. And for 3 days he sleeps all the time, that's all he does. When I tried tube feeding today food came back up but it was tinged with blood. And the food started coming up like RIGHT away, he couldn't take ANY of it. And he's open beak breathing, and sleeping. What is going on?