Hi, I'm new to chickens -- just bought 10 chicks (1 - 3 weeks old, various breeds) from a local feed store a week ago. Yesterday, one of the Barred Rocks was acting lethargic, then couldn't stand up (kinda feel over on one side, I thought she'd injured her leg). I isolated her and noticed very slow "panting"... I tried bottle-feeding her some liquids, but within 6 hours of noticing her lethargy, she was dead. Lost an Orpington last night. Now two more are showing symptoms. No vets are open on Sunday -- any thoughts??