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.
Surveillance drones or unmanned aerial systems (UASs) raise significant issues for privacy and civil liberties. Drones are capable highly advanced surveillance, and drones already in use by law enforcement can carry various types of equipment including live-feed video cameras, infrared cameras, heat sensors, and radar.