material to the next rotary member 36 and so on until this grain and other material reaches the auger 13 from which it is taken with the cut crop to the subsequent components of the combine harvester it will be seen from fig4 that the length of each paddle 54 as seen radially with respect to the sleeves 51 carrying the same is substantially equal to the spacing between adjacent sleeves 51 so that there is little likelihood of grain falling to the floor 29 once it has been picked up by the paddles 54 of the forwardmost rotary member 37 but if any grain does so fall it will move down the floor 29 to be acted upon again by the paddles of the rotary member 37 thus the increased capacity of the machine due to the presence of the second feeder means 15 is not detracted from by extra grain loss because any grain separated in that feeder means is collected and transferred with cut crop to the normal grain handling components of the combine harvester the crop gathering attachment of fig1 to 4 can be modified so as to be capable of harvesting previously cut and windrowed crop and fig5 illustrates such an embodiment it will be seen that fig5 is identical to fig3 with like components carrying the same reference numerals except that the cutterbar 12 has been replaced by a crop pick up device indicated generally at 64 the pick up device 64 is conventional and comprises a frame 65 by which it is mounted on the transverse beam 27 and a shaft 66 carrying a plurality of discs 67 from which extend a plurality of retractable tines 68 each tine 68 is pivotally mounted.