a collector frame comprising a first side, a second side, and at least one cross member, wherein the first side and the second side are spaced apart and coupled to opposite ends of the at least one cross member;

a roller assembly comprising a skeleton structure and a plurality of tine wheel units, each of the tine wheel units comprising a plurality of flexible tines, and the skeleton structure comprising a pair of hubs and a plurality of struts, wherein a first hub and a second hub of the pair of hubs are coupled to respective opposite ends of each of the struts, wherein the tine wheel units are arranged around and supported by the struts, and wherein the skeleton structure is rotationally coupled between the first side and the second side;

a remover mechanism arranged between the first side and the second side, wherein the remover mechanism comprises a plurality of teeth, each of the teeth extending respectively between two adjacent tine wheel units; and

a lifting mechanism comprising a plurality of wheels, a lift support frame, and a lift handle coupled to the lift support frame, wherein the lifting mechanism is rotationally coupled to the collector frame, wherein the lift handle is configured for manual operation by a user to move the lift support frame between an engaged position and a non-engaged position, and wherein the wheels are configured to raise the roller assembly above a collection surface in the engaged position.