The ornamental design for a deer blind, as shown and described.
FIG. 1 is a perspective view of a deer blind showing our new design;
FIG. 2 is a top view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is an end elevational view thereof; and,
FIG. 5 is a bottom view thereof.
The broken line showing of a roof in FIGS. 1–4 is included for the purpose of illustrating portions of the deer blind and forms no part of the claimed design.