Will the gummy worms be wrapped? The little kids will have to be excellent catchers it not. How much of the robin will show? I made several bird costumes for a second grade PTO program. The children wore turtle necks and shorts the color of the chest of the bird, and tights for the bird's legs. I made a cape with a hooded top and added a tail at the center back. The hood came down to the bridge of the nose and I sewed on a beak. the wings were tapered out to the back in big scallops. I used some very thin polyster suede type cloth for the capes. The hoods tied under the chin, and an elastic wrist loop was sewn near the tip of the wing for the hands to slip through. I don't know if any of this makes sense. but it worked very nicely.