I claim the ornamental design for a bird feeder shelter, as shown and described.
FIG. 1 is a perspective view of the bird feeder shelter shown in a usage state in an environmental view.
FIG. 2 is a right side view of the claimed design.
FIG. 3 is a left side view of the claimed design.
FIG. 4 is a front view of the claimed design.
FIG. 5 is a back view of the claimed design.
FIG. 6 is a top view of the claimed design; and,
FIG. 7 is a bottom view of the claimed design.
The broken lines shown in FIG. 1 illustrate environmental structure. The broken lines shown in FIG. 7 illustrate portions of the bird feeder shelter. The broken lines form no part of the claimed design.