This is a delicate project. It probably is more of a show piece than a useful box but I like it. The wings are cut from 1/8" stock so you should stack cut them for better control and to speed up the work. The body is 3/8" dowel stock that is tapered to the tail.
I used a 1/8" drill bit in a drill press to cut the slots in the body for the wings. It will be tough to make the slots without a drill press. The wings are delicate so you need the slots to hold the wings securely.
I sanded one side of the dowel flat so the body can be glued to the top of the box.