They are fascinating birds. They lay their eggs on the ground with no real nest, just sort of a wallowed out place, sometimes even in gravel. You'll know you're close to their eggs when they start chirping loudly and running around to lead you away from it. They will stop and lay on the ground and feign a broken wing, like they are luring a predator away from their eggs. I didn't really work from a pattern, just an edited picture of a real Killdeer, so I made a pattern from the cutting I did. You may have to alter it a bit as you go.