Hello! My black sex-link, who was attacked last spring (turned out to be the neighbors cat), fully recovered in the summer after weeks of TLC and lots of good advice from BYC. Thank you! Our flock of 12 has been happy, healthy and are a joy to be around. So of course why not add more! We brought home new additions (4 months old) least weekend and have kept them quarantined but noticed that two of them sound congested. We are planning to treat them with Oxine, but am wondering about probiotics after they receive these antibiotic treatments. Our other girls love yogurt. Anyone have suggestions?