one of my gold-sex links is sick she wont eat or drink she is only 7 months old she will stand for a bit then lay down. No worms. poop is a solid yellowish color though. runny nose no sneezing, droopy tail and wings. her other 4 sisters are fine and are happy and eating and drinking. whats wrong? is she sick dose she have a cold she is in side and is isolated also we live in AZ no cold weather here. Please help!