We have taken Kathy's advise and will be sending three chickens to OSU for analysis. It wasn't as expensive as we thought, and we need to know before we proceed in reestablishing a flock. We cannot make the same mistakes twice with precious lives. We did speak to Dr Jim Hermez, a poultry specialist at OSU, and he offered that there were five causes that would cause such devastation. Malnutrition from feed rations, no supplements (which saddens me as this was not indicated in the books I have read as essential), Avian flu, New Castles (he said was very rare), mold or infested feed, . He concurred that it was not from cold. We so appreciate everyone's thoughtful advise and input in this sad time. We will post the pathologists findings as soon as we receive them so we can solve this mystery for everyone. Please know that our dear rooster Elvis has recovered and is relaxing in the barn with a delicious meal of "people food" as we do not trust our feed at this time (Bananas, pears, apples, corn on the cob) He is being admired by admired by our resident pheasant and is doing well.