A good idea for a small bathroom, under hanging shelves for things like cotton balls, cotton swabs, etc. Also great in the kitchen, for a spice rack over the stove. Just hang jars from bottom of the cabinet.
Could also do as part of a gallery wall, or in a grouping with other similar frames (either with all birds or other things like trees, butterflies etc.) I might prefer to have the birds flying out of the frame instead of into it.