Came home today to find a hen honking and wraspy. (sp) She will honk with her breathing, then a loud honk and shake her head. No runny eyes, nose etc. I tried to feel her crop, but can't seem to locate it. When I tipped her upside down she did have some discharge. She is 20 weeks old and was fine last night at roost time. Any ideas?? Please help she's our first layer.