Answer:
Domestic chicken evolved by artificial selection and therefore they are less adapted to survive in nature where prey populations coexist with the predators (like the fox).
Explanation:
Commercial chicken (Gallus gallus domesticus) is the result of the artificial selection exerted by early farmers in China 8,000 years ago. Artificial selection is aimed at benefiting one or more particular traits in detriment of others. Domestic chickens were selected by humans to produce fast-growing meat animals in detriment of traits found in wild progenitors of modern chicken. In consequence, the processes of artificial selection result in a loss in genetic diversity in traits that are not being selected including, for example, phenotypic characteristics associated with the ability to avoid predators.