Physical Characteristics Adult killdeer reach a length ranging between 23-27cm, with an average wingspan of 17.5 cm. Another band is located at the head, resembling a mask absent of the facial portion. Plumage is relatively absent of complexity with the exception of a vividly colored, reddish-orange rump that is visible during flight and behavioral displays. The rest the body consists of a grayish-brown coloration along the dorsal side, crown and nape, while the ventral region is white. Characteristic of species in the same order, C. vociferus possess a lengthened tarsus and a pointed, extended bill, suitable for its foraging habits.
Sex characteristics are difficult to determine since killdeer are essentially monomorphic.
Reproduction Killdeer mating patterns are fairly simple, with the males claiming a territory in which to nest prior to attracting a mate. Nests are typically bare, consisting of a basic indention into the habitat floor, produced either naturally or by the killdeer itself. The male attempts to attract females with a series of two-noted calls. Aerial displays also occur, taking place around the nesting area. Females lay an average clutch of 4 eggs, though the clutch may be as few as 2 eggs and as many as 6.