I made some silhouettes. Find a picture or drawing or outline of a pigeon (or dove) online. Right click and save it to your computer. Open it with MS Paint or whatever graphics program you have. Enlarge and print a copy that is life sized. Use the copy as a stencil to cut out a silhouette from some masonite, 3/8" oriented strand board, plywood, wood shingles, sheet metal, or whatever you have at your disposal. Paint it grey, and add details to the eye/beak. Use a nail, welding rod, coat hanger, dowel rod, popsicle stick or whatever else you can find to use as a leg. Stick it in the ground. Presto! You did it!