The ornamental design for a flexible and suspendable bird decoy, as shown and described.
FIG. 1 is a front view of the first embodiment of a flexible and suspendable bird decoy showing my new design, with the rear view being a mirror image thereof; and,
FIG. 2 is a front view of the second embodiment of a flexible and suspendable bird decoy, with the rear view being a mirror image.
It is noted that because the bird decoy in both embodiments is substantially flat, side views are not shown as they would not be descriptive of the claimed subject matter.