I am worried about my Swedish Hen. She has green runny poo and sits a lot. She seems to be lethargic and stayed on the roost this morning. Last night I had to wash the poo off her back end while she sat in the warm water. I work full time and don't know if she is eating or drinking. Very worried about her. I did not feel an egg when I did a vent check. Also, I did something very stupid. I treated one small corner of my yard for ticks with Sevin Dust. My birds have access to that area when they free range. Please advise.