Variable straw and chaff distribution arrangement

An agricultural harvesting machine has straw walkers or the like, an air sieve device, a straw chopping device, and a variable straw and chaff distribution arrangement. The arrangement includes an articulated lever combination; a servo element associated with the articulated lever combination; preferably two rotary distribution blowers each having a material inlet opening and a rotor circumference and being connected to the articulated lever combination. The rotary blower is movable between two different plane-parallel positions by the articulated lever combination and servo element. An outlet of the straw chopping device lies in a plane of the material inlet opening of the distribution blower. A guide is provided for supplying chaff radially to the distribution blower.