Hello everyone, This is my first post so thanks for welcoming me to the community. We live in Thousand Oaks, CA and now have 10 hens. 6 Full size hens and 4 Silkies. A few weeks ago we lost a hen in broad daylight then one was attacked and survived in the coop that night. The next week we lost a silkie and an 8 week old chick to the same predator. Luckily after some upgrades we haven't had any attacks... but... just after all this... Our Plymouth Rock Hen started gurgling when she'd breath. We removed her from the flock, added vitamins to her water and started using VetRX along with ACV in the water. Soon after started treating her with Oxine mist. She started getting better but a few days later one of the 8 week old chicks got the same thing. Within 3 days of being quarantined however both chickens show no signs of any sickness but are still in quarantine. Now it's a week later and our buff orphington started sneezing and gurgling. I gave her the same treatments and within an afternoon the gurgling has stopped but she's still sneezing. The questions I can't seem to find an answer too is... how long do the chickens need to stay in quarantine AFTER they stop displaying any symptoms AND is it ok to quarantine a newly sick hen with ones that are on the mend? I'm wondering if what ever had been attacking my hens brought something with it from surrounding flocks? Thanks everyone in advance.