The ornamental design for a portablehunting blind, as shown and described.
FIG. 1 is a front view of a first embodiment of the invention.
FIG. 2 is a rear view of the embodiment.
FIG. 3 is a right view of the first embodiment.
FIG. 4 is a left view of the first embodiment.
FIG. 5 is a top view of the first embodiment.
FIG. 6 is an isometric view of the first embodiment in use by hunter.
FIG. 7 is a front view of a second embodiment of the invention.
FIG. 8 is a rear view of the second embodiment.
FIG. 9 is a right view of the second embodiment.
FIG. 10 is a left view of a second embodiment.
FIG. 11 is a top view of the second embodiment; and,
FIG. 12 is an isometric view of the second embodiment.
The broken lines depict portions of the portable hunting blind that form no part of the claimed design. The hunter shown in broken lines illustrates environment and likewise forms no part of the claimed design.