I had 8 Cornish crosses that are 6 wks old. Last week we noticed some blood in the coop but weren't sure where it was coming from. Yesterday there was quite a bit of blood, pretty obvious that it was in the poop. I went to town and bought some wormer. By the time I got home, one bird was dead. Today another one is dead. I am expecting to lose at least one more because it had blood on its butt. Do you think it is from worms? or is something else going on? BTW I also have 16 pullets that are 12 wks old, 2 EE pullets that I bought at the same time as the cornish, and 2 hens 1-1 1/2 yrs old, and a silkie rooster. None of the other birds are acting sick.