The second hen in two weeks has come down with ??? The only symptons are they have both gone cold and the weather has been in the 50s. They just seem to shut down. No breathing problems they are not underweight at all. I've brought them both in warmed them slowly given warm water and electrolytes.They slowly warm up, stand, drink on their own and eat.The recooperation time is about 3 days and the first afflicted hen is back out doing chicken things just fine! They are just terribly weak and cold ???????