I have a sexlink and she has been acting weird for two weeks now. At first I thought the heat was getteing to her. Now her wattles are turning greyish purplish and she gasps for air. She comes out of the pen but stays away from the other chickens. She walks very slowly and stops to rest. Her abdominal feels very firm when I pick her up. None of the other chickens are sick or acting like this. What should I do. She looks like she is suffering and I have no clue what to do or where to begin. Can someone please help.