Yes. If you happen to be a bug, a chicken is your worst enemy.
purple
Fox
An enemy no, but a predator yes.
you have a chicken predator
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Foxes, rats, cats, raccoons and bats eat chicken eggs.
possum
I have never had a chicken die from old age, I have had at least 100 chickens over the years, and I think your answer is whenever a predator can get to it.
Predation: Predatory behavior, Predatory: any organism that exists by preying on others, Prey: an animal hunted and seized for food. Example: A predator could be the a snake. The prey would be a rat.
Chicken coops have historically been built with two doors to allow the hens to escape a predator. When an animal is entering from one door the hens can leave through the other. If the chicken coop had only one door the hens would be trapped inside when a predator entered.
A chicken predator is an animal that preys on or attacks chickens. Common chicken predators include foxes, raccoons, hawks, weasels, and domestic dogs. It's important for chicken owners to take measures to protect their flock from these predators.
Generally the Asian kitten but it can range from anything from the common kettle chicken to the knife ant.