I'm late to the party, but I just read through this whole amazing thread and am so pleasantly surprised at the outcome. I'm glad your birds are still with you!
I know a lot of folks have said AI isn't in the news enough, but I don't know, I seem to keep hearing it on the radio and seeing it in print and online all over- and it's not even in our part of the country (yet). I've been worried about my little backyard flock all spring. My 8 girls are just pets, and it's been a closed flock for over 2 years, but I am constantly worried about what potential diseases/infections/contaminants I could be bringing home from the feed store, horse barn, etc. I know someone mentioned taking biosecurity precautions up through sterilizing car tires, but that just seems like a virtually impossible standard to me. I have a pair of boots that I only wear in and out of the yard and coop/run, but the chickens free range and people drive cars and walk on our driveway, which the chickens range over. How could we possibly protect them from anyone who drives up to the driveway after being somewhere else? Right now, we've decided that a life without free ranging ever just isn't fair to them, but if (when?) AI shows up here, I guess we'll sadly have to rethink that.