I have an americauna chick that I got a week after Easter. She was fine up until a few days ago and then she started to get droopy. She hardly eats or drinks and when I open the coop she comes out with the rest but then just stands around sleeping. Yesterday she was putting her head under her wing. Today I noticed a large bubble like thing that feels full of fluid at the base of her neck. She does not stretch her neck out at all. Any Ideas?