I think you could have both MG and cocci going on in the flock. Necropsy by the state vet is the only way to know for certain other than to look at symptoms. Here is some info on both:I wonder, because Nell did get pus oh her beak and fluffy still sounds gurgly. So weird
http://www.thepoultrysite.com/disea...ction-mg-chronic-respiratory-disease-chickens
http://www.the-chicken-chick.com/2012/12/coccidiosis-what-backyard-chicken.html