It's fall and so migratory birds (mainly water birds) are headed south for the winter. I know most people know this but in case anybody doesn't. Anyways lately a lot of geese have been flieing over my yard (mainly my coop) and there's been a lot of them. :/ I was just out with my hens and I heard and saw like 50 geese in they're flying pattern right above my yard, coop, chickens and they're outdoor waterers which I moved under trees to prevent further exposure. I know wild Canadian geese can carry mareks disease.... Do my hens have a high chance of getting this disease though this kind of exposure? And no they haven't been vaccinated for mareks but my birds do have strong immune systems because they most likely have been exposed to bronkitis a few years back and nothing happend, if that makes a Differance. My birds are ages 1,2,3 and 4 years old and almost another year older. Please help I'm really worked about the exposure!