i have a 4 month old bantam cohin roo that has lost all color in his face and skin, hes is loosing feathers and his craw is the size of a baseball. the craw feels squishy and not hard like it is full of feed maybe full of air or some type of fluid? i picked him up this mornin to bring him inside and as soon as he sat down he threw up this yellowish clear liquid. what could be the problem? i fed him some yogurt and crushed tostitos and since he ate hes been shaking his head. SOME ONE PLEASE HELP ME!!!