I am treating 12 birds for and upper respitory. They all got a grumble in their lungs that sounded like congestion and also began coughing. My vet said it was an upper respitory and gave me lincomycin-spectinomycin and told me how to treat. I called her to see how long I should wait to eat the eggs and she said she wasnt real sure. She said as of now wait at least 10 days but if i gave her a call back she would know for sure how long. I figured someone on here with all the suroplus of chicken knowledge would know. Thanks for any help