Hi,I am a new member to BYC and my husband and I are also new proud chicken enthusiast.We recently purchased 7 ladies from a local farmer and began our adventure.We have 2 Buffs,2 Plymouth Rocks,3 Rhode Islands.We started the girls on a layer mash mixed 50:50 with crushed corn;fresh ample clean water is always available.Amature as we are the age of our girls is something we didn't think to ask.From literature obtained I am guessing about 10-12weeks.this morning I noticed one of our Rhodes comb was extremely pale and she was stretching her neck and opening her mouth wide almost as to cough yet silent.She also seems to have a clear discharge at the nares and bubbling inside her eyes.I noticed the other Rhodes and the Rocks also have the discharge and a cough.also after watching the flock I noticed The Buffs having diarrhea.We changed water to add probiotics and food to medicated mash with amphroal.I am confused by the different symptoms and unsure the correct path best to help the girls.I would appreciate any input to help treat.Are we dealing with two separate illnesses or what??Thank you friends in advance.