My buff Cochin I purchased at a talegate sale 2 weeks ago won't move. It's hunched over and it's crop is full of thick watery substance. If you lift it it drools. I have it isolated. It won't eat or drink anything. I think it starving. I feed it everyday but I think the others I had it in with abused it. I just noticed today. I never acted this way before. What do I do? When I bought it it acted a little different once it got home. It's around 4 months. The birds it was in with were 2.5 months. HELP!!!!!!!!!!