The ornamental design for a hayfeeder, as shown and described.
FIG. 1 is a reduced perspective view of a hay feeder according to my new design wherein the inner bottom portion is represented in mere black lines due to the distant view. This portion of the hay feeder is explicitly shown in full detail in FIGS. 6, 7;
FIG. 2 is an one end elevation view of the hay feeder shown in FIG. 1;
FIG. 3 is a left side elevation view of the hay feeder shown in FIG. 1;
FIG. 4 is a right side elevation view of the hay feeder shown in FIG. 1;
FIG. 5 is an opposite end elevation view of the hay feeder shown in FIG. 1;
FIG. 6 is a top plan view of the hay feeder shown in FIG. 1; and,
FIG. 7 is a bottom plan view of the hay feeder shown in FIG. 1.