While widely regarded as harmless, these birds are known to be dangerous and attack unsuspecting fast food chain customers in large groups known as "militias".
Drive Thru Boy: ...Ma'am?
Carla: Goddamn North American River Chickens just crapped all over my car!
911 Operator: Sir, what seems to be the problem?
Raould: The fucking North American River Chicken Militia just jumped my ass at the drive thru! Yeah, take the goddamn ketchup packets too you free-loading bastards!