I have just finished the 7 day course of flubenvet for my 10 hens. Which seems to have eradicated the gapeworm symptoms in those that were showing them, all barring one chicken!! :-( I don't think she's been eating the food. I have brought her in the house, with what's left of the medicated food, but she's not eating it still :-( she has pale combs, watery poo, sleepy a lot & obviously not eating, or drinking a lot. Any suggestions please, greatly appreciated?