I've been caring for my birds for year I thought I knew the cure to every sickness. But know my birds I dieng it's been one a day for the past three days I have a sick sebright roo now. They do not have lice or any other noticeable parasites. They seem to get a toxin, Like in the past if one of my bird's ate a poisoness spider this is how they wold act, all listless and discolored. But it started with my young baby buttercup she was fine then she wasn't one morning (these birds show no symptom of sickness until it's too late) She was too far gone my little pullet, and I brought her in but she was having the death shakes and she passed by the time I got her wrapped up in a warm towel. Then the next night my sebright hen was extremely listless so I brought her inside, And got her eating some honey mixed with wet chick feed and a warm towel on her. She was doing better so I went out to lock up the other coop in my back yard (these past two birds where in the front yard) In my back yard coop one of my other sebright males was missing I found him huddled up and dieng for NO REASON. He had no wounds he was extremely active that morning when I let them out (his usual self) I got him inside and gave him the same treatment he gobbled up the food mix like he was starving. I was worried he was in shock or ate a bad bug and hoped it would just passed I wrapped him up in a warm towel and put him in a seperate box by the other sick female. I checked on them before I went to bed and the sebright hen seemed very out of it. I got her to drink some sugar water then put her back to bed, The rooster was very active but his crown was still slightly discolored. I tried to get him to drink the sugar water but he didn't want it so I put them to bed and preyed they be safe. I got up to see the hen was doing much better so much better she was determined to go back out. I figured what ever made her sick had passed and I put her back out in her small pen with her two sisters. (she's still doing fine and it's the next day btw) But the rooster was dead and there was no sign as to why. I went ou and checked ALL of my birds over (includes the standard chickens, the quail, the ducks, the turkey, and the chick's and their moms) Every one seemed fine. Then tonight putting everyone up the brother to the rooster who died was in the same spot dieng. I took him inside gave him the same exact treatment and now I'm waiting to see how it plays out now. Only thing different I did with this bird is I gave him some de-wormer (just in case they where all de-wormed a few weeks ago as is routine) and gave him some of my baby chick's vitamins also in his sugar water mixture (All the baby chick's are healthy thank God) So please If any one has any idea what could be causing this. The birds are just dieng for no reason, and thier young bird's not even a full year yet. So please, Please HELP ME. I feel helpless not being able to cure my babies. THANK YOU SO MUCH. Also I just bought a new bag of feed recently before all this started I'm calling the store tomorrow to see if any one's reported sick birds, because the feeds the only thing different I could think of.