I have four 5 week chicks. At 2 weeks, they all started fluffing up and acting lethargic and having bloody poos. I freaked out thinking it was Coccidia, even though I am feeding them medicated feed. After scrambling to find a solution, a million a internet searches, advice from stupid feed store employees, etc i broke down and called the guy I got the chicks from. He said he doubted it was Coccidia. He said when he sees symptoms like these, he ads a powdered antibiotic to their water for several days or until symptoms clear up. I did this, what I bought was called Tetracycline. Worked wonders!!!
Wel now my chicks are estimated 6 weeks old, and I have one chick of al four displaying these symptoms again. She is still, sleepy, eyes half closed all the time. She still eats and drinks, though significantly less than the others. I have started syringe feeding her the water with anitbiotic. Fingers crossed she perks up. I dont think her issue is crop impaction, but a bacterial infection in her gi tract. Time will tell.