I like observing animal behavior. I just watched a strange cat (a stray) enter an area where one of my chickens was standing. The hen immediately realized this is not one of our cats. She held her body very erect. She did not retreat. She started clucking loudly and constantly. One by one three other hens came to join her, also clucking in the same manner. The geese came to the area to see what was happening. The cat became intimidated by the noisy hens and left. The hens quieted and went back to normal.
Sadly, the cat has a huge injury to its back. My guess is someone did not want to pay a vet bill, so they dropped it here. If I can catch it, I will treat it.