Hi! I'm new to this forum and am in desperate need of advice for my sick hen. We have 8 hens.....5 Welsummers, 1 Buff Orpington, and 2 Black AustralorpS. 1 of our Welsummers, who's about 3-4 months old started acting very lethargic (she was actually walking and fell over), sitting with...