Sources
http://www.allaboutbirds.org/guide/killdeer/id
http://animals.nationalgeographic.com/animals/birding/killdeer?source=A-to-Z
Book of North American Birds. Pleasantville, NY: Reader's Digest Association, 1990. Print.
http://animals.nationalgeographic.com/animals/birding/killdeer?source=A-to-Z
Book of North American Birds. Pleasantville, NY: Reader's Digest Association, 1990. Print.