So sorry for your loss. The second picture in post 6 is the classic pose for cocci--of course other illnesses can cause that, too. I would look everyone over to make sure they are eating and drinking. Did your chick ever have blood in her poop? Blood doesn't need to be present in poop (it is only in the 2 worst strains,) but if you see any blood at all, start Corid. I would get a packet to have on hand since it can be scarce on shelves sometimes. Here is a link on cocci: http://www.the-chicken-chick.com/2012/12/coccidiosis-what-backyard-chicken.html
