generally rearwardly from the frame member 12 between the windrow forming or end shields 35 means for releasably holding each of the fluffer shields 40 42 in desired set positions of upward and downward swinging movements thereof comprises pairs of brackets 44 and 45 for each of the fluffer shields 40 42 the brackets 44 are secured to the rear portion of the frame member 12 and extend upwardly therefrom the brackets 45 being elongated in a direction transversely of their respective fluffer shields and projecting upwardly therefrom each of the fluffer shields is provided with one of a plurality of support arms 46 each having inturned or angularly disposed opposite ends 47 and 48 the former of which is pivotally received in a transverse opening 49 in a respective one of the brackets 44 the opposite inturned end of each support arm 46 is pivotally received in a selected one of a plurality of spaced openings 50 in a respective one of the brackets 45 as shown in fig6 the inturned ends of the support arms 46 may be provided with suitable clips or like fasteners 51 for releasably holding the support arms 46 in engagement with their respective brackets 44 and 45 by placing the lower inturned ends 48 of the support arms 46 in different ones of the bracket openings 50 each fluffer shield may be supported at a different angle of its swinging movement from that of the others of the fluffer shields during travel of the machine through a field and rotation of the conditioner rolls 33 and 34 the cut crop is fed between the conditioner rolls 33 and 34 and propelled thereby rearwardly and upwardly toward engagement with the shields 40 41 and.