The ornamental design for a poultrynestingbox, as shown and described.
FIG. 1 is a perspective view of a poultry nesting box showing my new design;
FIG. 2 is a front elevational view of the design illustrated in FIG. 1;
FIG. 3 is a right elevational view of the design illustrated in FIG. 1;
FIG. 4 is a left elevational view of the design illustrated in FIG. 1;
FIG. 5 is a top view of the design illustrated in FIG. 1; and,
FIG. 6 is a bottom view of the design illustrated in FIG. 1.
The broken line showing in FIG. 1 of a chicken and some nesting straw inside the nesting box is for illustrative purposes only and forms no part of the claimed design.