Agencies like the federal Wildlife Services (not to be confused with the United States Fish and Wildlife Service), part of the United States Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS), and its equivalents on the state level employ professional hunters for lethal as well as non-lethal control of wildlife, for example, dealing with wildlife preying on livestock (or humans) and engaging in bird control to prevent bird strikes.[25][26][27] The federal Wildlife Services alone has a staff of around 750 professional hunters.[27] It works on around 565 airports around the United States to identify and reduce threats posed by bird strikes.[27]