If my chickens are showing no sign of MG, should I have them tested anyway. I am very worried, as I bought my chickens from Cackle and my Silkie chickens from two individuals, one in CA and one in Illinois, I think. The Silkies were a month old already. About two weeks ago I thought I heard my EE roo snort or sneeze and then again about a week after that. Nothing since. No symptoms in my other birds, no sneezing, etc. I have never put the Silkies with my Cackle-bought group, but their hen houses are right next to each other and a couple of times they have browsed on the same grassy area. Thanks for any advice.