One of our two chickens has had diarrhea for awhile. She was otherwise behaving fine. this morning she was lying on the coup floor.
I brought her out into the pen but no activity. We have no professional small livestock vets available. Her sister is fine.
About. 2-1/2 years. They’re in a decent sized coup in a 10 x10 enclosure. She’s a Golden Comet.
They eat Kalmbach layer crumbles, and get occasional treats.
I also try to let them out a couple times a week, and sit with them so they can peck around in the grass.
In the meantime, I recommend mixing cooked plain boiled white rice mixed with buttermilk in her feed to eat. The plain boiled rice will settle her innards and the buttermilk will coat her digestive tract slowing the effects of infection until you get the Baytril.
Birds get ecoli bacterial infections mainly from picking up and swallowing fecal matter. It could be anywhere, in bedding, feed, water, on soil etc...
It happens, I've dealt with it. My birds are penned all the time. I clean coops in the morning, scoop poop several times a day. Waterers checked daily, cleaned and changed out as needed. Some of my waterers and all feeders are hung so birds cant poop in them.
Fortunately I've only had to deal with ecoli only a few times. Dont waste time, buy the Baytril or you might lose your chicken.