Hi, I came home today and found my little roo acting strangely. He's puffing up his feathers, his tail is down, he's not hanging with his pals, and he's pulling his neck in like a turtle. He's also not eating any food / treats tonight, although I did see him drink. He has a nice coop with pine chip flooring. Temp here in the boston area is about 70. I feed purena medicated chick starter, and for treats some ground corn, oats, blueberries and some bits of bologa. They go out at night in an enclosed dog-pen and eat grass, bugs, etc. I did not see him get into anything. Eyes and nose are clear. Does anyone know what might be wrong with the little sweetie? I am willing to go to a vet - whatever it takes. Here are a couple of pictures I just took, although they aren't great... Thanks for any help!!