August Morgan. This
Update: Kate of August Morgan saw this post and contacted me (she was unable to comment here). She clarified that the pillow is, in fact, one of a kind. She found a vintage kit and had just that one stitched by a fair trade organization in India and then hand-sewn into a pillow in Austin, Texas. Kudos, Kate!
The crewel birds were the inspiration for my popular Three Masked Birds design.