So Mister thought farmer was going to let the chickens loose on him.
"Oh no !" thought Mister. "It's ok to have chickens clean my space when I'm away... but them pecking at me ? Nooooo waaaay ! That may hurt. I have to make sure they stay away from me now.
So things got really, really, really noisy on farmers land. Not only was Mister barking to keep the chickens safe, but now he was also barking all the time to make sure they stayed away from him too.