I'm new to chickens and have had two roosters die in the two months. The first roo was a buff Orpington. He seemed very well and was acting normal. I first noticed he had stopped crowing and then had started to isolate himself. His comb turned a deep purple red color. He had loose stools. He passed away. This happened over a three day period. The second roo, "Clarence", was a beautiful mixed breed roo. He was crowing this morning and acting himself. I went to check on the birds as it was extremely hot, around noon today. Clarence was sitting on the floor by the water dish. I picked him up and he seemed lethargic, but not ill. His comb was the normal beautiful red. His crop, I noticed was a little squishy, but I don't know enough about crops for this to tell me anything. I gave him some cold water and he seemed to perk up. I let him be. I checked on the birds again at 4pm and Clarence had passed. What has happened? Any ideas? I have nice, clean facilities for my birds. My hens are doing great! I'm feeling very discouraged. I didn't realize chickens could be so hard to keep. Already had these two Roos pass and had one with thrush. Thankfully the hen with thrush is healed and doing well.