A motion attachment device (11) is disclosed for use with a decoy (10) having a keel (21). The motion attachment device includes a housing (25) with a slot (26) which is configured to releasably receive the keel. The device also includes a pair of actuators (22) removably mounted to opposite sides of the housing. Each actuator includes a casing (23), a top motor (28′) for driving the movement of wings (36) and a bottom motor (28″) for driving the movement of the feet (35), and a battery (29) for powering the motors. The actuators are self contained and are removably mounted to the housing through a hand driven threaded bolt (40) extending through a bolt hole (41) in the casing. The bolt is threaded into a corresponding internally threaded bolt hole (42) in the housing.
