The ornamental design for an owlheadlight, as shown and described.
FIG. 1 is a perspective view of an owl headlight showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is another perspective view of the owl headlight shown in an environment of use.
The broken lines throughout the drawing figures depict portions of the owl headlight that form no part of the claimed design. The additional broken lines shown in FIG. 8 depict environment only and form no part thereof.