FIG. 1 is a perspective view of a waterfowl call insert, showing an opaque embodiment of the new design;
FIG. 2 is a right-side elevational view thereof;
FIG. 3 is a left-side elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of a transparent embodiment thereof;
FIG. 9 is a right-side elevational view of FIG. 8;
FIG. 10 is a left-side elevational view of FIG. 8;
FIG. 11 is a rear elevational view of FIG. 8;
FIG. 12 is a front elevational view of FIG. 8;
FIG. 13 is a top plan view of FIG. 8; and,
FIG. 14 is a bottom plan view of FIG. 8.
The broken lines showing a mouthpiece in FIG. 1 depict environmental matter and form no part of the claimed design.