An accumulator couplable to an agricultural baler and configured to support crop packages exiting an agricultural baler, the accumulator comprising: a frame including a first end, a second end, and a support structure positioned between the first and the second ends; a crop package moving assembly moveably coupled to the frame, the crop package moving assembly configured to move a first crop package in a first direction, the crop package moving assembly also configured to move a second crop package in a second direction opposite to the first direction; a first carriage coupled to the first end of the frame and configured to move relative to the frame between a retracted position and an extended position, the first carriage configured to support the first crop package that exits the agricultural baler; a second carriage coupled to the second end of the frame and configured to move relative to the frame between a retracted position and an extended position, the second carriage configured to support the second crop package that exits the agricultural baler; characterized in comprising a retraction linkage coupled to the crop package moving assembly and selectively couplable to the first and second carriages (86, 90), the retraction linkage configured to move at least one of the first and second carriages (86, 90) from the extended position into the retracted position, and further comprising a first extension linkage coupled between the frame and the first carriage and a second extension linkage coupled between the frame and the second carriage, wherein the first carriage is movable into the extended position in response to the first crop package engaging the first extension linkage, and wherein the second carriage is movable into the extended position in response to the second crop package engaging the second extension linkage. a frame including a first end, a second end, and a support structure positioned between the first and the second ends; a crop package moving assembly moveably coupled to the frame, the crop package moving assembly configured to move a first crop package in a first direction, the crop package moving assembly also configured to move a second crop package in a second direction opposite to the first direction; a first carriage coupled to the first end of the frame and configured to move relative to the frame between a retracted position and an extended position, the first carriage configured to support the first crop package that exits the agricultural baler; a second carriage coupled to the second end of the frame and configured to move relative to the frame between a retracted position and an extended position, the second carriage configured to support the second crop package that exits the agricultural baler; characterized in comprising a retraction linkage coupled to the crop package moving assembly and selectively couplable to the first and second carriages (86, 90), the retraction linkage configured to move at least one of the first and second carriages (86, 90) from the extended position into the retracted position, and further comprising a first extension linkage coupled between the frame and the first carriage and a second extension linkage coupled between the frame and the second carriage, wherein the first carriage is movable into the extended position in response to the first crop package engaging the first extension linkage, and wherein the second carriage is movable into the extended position in response to the second crop package engaging the second extension linkage.