A baler including a feeder duct and a feeder operable within the feeder duct. The feeder includes a tine bar holding member having rotatably mounted thereon at least one tine bar having mounted thereon a set of tines. The tine bar is rotatable about its own axis relative to the tine bar holding member and is rotatable together with the tine bar holding member about an offset axis. The feeder further includes a sun gear co-axial with and rotatable about the offset axis relative to the tine bar holding member； a mechanical coupling the tine bar to the sun gear； and an adjustment system configured for active adjustment of the angular position of the sun gear about the offset axis as the tine bar is rotated about the offset axis.
