I had 14 laying hens and 2 roosters but as of today one of my roosters died very suddenly and my Rhoade Island Red Hen is now sick. My rooster was a small yellow bantam about 7 months old and my Rhoade Island Red is just at 6 months old and barely laying. She has green diarrhoea, sneezing but does not have any discharge from her nose, mouth, or eyes, appeared to be paralyzed but then I brought her into the garage, put her under a heat lamp, and she is now moving around and eating and drinking, however she has a very bad smell about her. I'm worried about the rest of my flock and wondering what to do. My chickens are housed in a 12x24 ft pen with a house inside the pen 4x 12 x6ft tall with straw for bedding. I use a heat lamp in the chicken house at night for warmth since I live in Montana and the temp gets below freezing every night here. I have never before had sick chickens. Should I put them all down, and are the eggs from the flock safe to eat? I don't know what kind of Over The Counter medicines would be helpful but I do know that some should not be used for laying hens if the eggs are intended for human consumption. Could this be Cholera or Newcastle? I tried to find a vet in my area but all of the places I called just laughed at me. Apparently vets around here only deal with cats, dogs, and horses. I'm worried this could be serious.