I have this four year old barred rock hen. Her comb is pale and drooped over, and she doesn't seem to be eating much. She has been really lazy lately, too. Her poops are mostly white, and I know it's because she hasn't been nourished well, but what I don't understand is why she twitches her head and clicks her beak loudly when she's eating. It isn't much of a twitch, it's just kind of like something is bothering her. I should actually get to emptying her crop. Could it be the malnourishment causing the small twitch?