"Arab chickens" are ones reared and kept in farms (not in poultry farms) among other animals and close to the people, and half of the time left free to look for their own feed. This special use of the adjective "Arab" is specific to Tunisia and not used in the sense mentioned above in other Arab countries. It might be of some linguistic and cultural interest to some to mention that other products such as "butter," "bread," "Harissa" (hot, red chili paste), etc., are also designated as "Arab" in Tunisia, meaning "homemade."