My 3 months old white silkie bantam is not eating much. She'll eat a few grains of rice or a few nips of yogurt and stop. She often opens her beak and flap her tongue. I have seen her and others do it during hot days but haven't seen any of them do it on a consistent basis. She's been lethargic too. Her poop is normal brownish poop. I can feel her shivering when I hold her. Does she have an infection?