I have a black astralorp that started laying about a month ago. Her size compared to her friends is a bit smaller. About 2 months ago, she started making coughing or sneezing noises (sounds like a loud 'bok'). Recently, she started swinging her head from side to side and makes weird movements...
For the past 6 days my one year old chicken has been coughing, kinda sounds like a chest cold. Her poop looks fine and I have seen no mucus coming from her nose. I am going on day 5 of treating here with Agrimycin-343. For the first two days I did 1/2 teaspoon per quart. And the last three days...