The chicken is a fowl. The definition of a fowl is a bird used for food. A hen is an example of fowl. Chicken is an example of fowl. fowl. the duck, goose, turkey, etc. a full-grown chicken, as distinguished from a springer, etc. fowl.
Data collection and search-and-rescue missions are faster and more efficient with a team of drones to pool data and provide redundancy in case some machines fail. But the use of more vehicles also adds complexity. Drones working together have to be able to communicate with one another and make collective decisions.
Quadcopters, also called drones are so much fun to fly! They are unmanned however outside of fun purposes, which are AWESOME by the way, they are also used for more serious pursuits by the military as well as other professional organizations such as police and the fire department and even certain civil departments.