i keep my 4 new chickens in a box in my basement (they are approx one month old) i took them outside in a larger cage for some fresh air and grass etc. They were fine when I put them back in their box last night. Today I discovered one of them dead, with its guts hanging out (assuming the others had picked at it after its death) One I noticed was pooping a clear/bloody discharge. One is not acting as actively and the other seems to be fine. I called the local farm supply, she suggested Corid but they had none. I called Tractor Supply, they have Corid for cows, can that be used for chickens as well or is there a special chicken formula, i need a quick response for fear the other 3 will die also. Thanks