We got this Buff Brahma hen on Friday night-- she was supposed to be of laying age, but we suspect she was younger-- she had been sneezing since Saturday morning-- not continuously-- just every now and then. Last night, I heard her cough and we were going to call the feed store where we got her this morning, but when we woke up, she was laid backward over the nest box with her wings splayed and a face full of mucus. Poor chicken! My husband is distraught. We also have a silver wyandotte that we got from the same place at the same time who is symptom free, but who has been in the same coop with the sick chicken. What should we do? Do we want to get another chicken from the guy who sold us these? Are sick chickens fairly common or is this indicative of a place where we wouldn't want to buy any chickens? Will our second chicken come down with what the first one had and die? How long should we wait before introducing another chicken to the coop. The wyandotte is all alone. Anything we newbies need to know? Thank you all for your help!!!