Resembling a much larger Semipalmated Plover (Charadrius semipalmatus), the Killdeer is most easily identified by its size (9-11 inches), brown back, two black breast bands, and orange-brown rump. Other field marks include its gray-green legs, black bill, and red eye ring. Male and female Killdeers are similar to one another in all seasons. The Killdeer breeds across the United States and southern Canada. Birds breeding in coastal areas and in the interior south are non-migratory, while birds breeding further north migrate south to Central America in winter. Other non-migratory populations occur in Mexico, Peru, and the West Indies. Less associated with water than most of its relatives, the Killdeer inhabits a number of open habitat types, including grasslands, mudflats, and gravel deposits. Also utilizes numerous man-made environments, such as fields, golf courses, and airports. The Killdeer eats small invertebrates, primarily worms and insects, but may consume plant matter when prey is scarce. Killdeers may be most easily observed while foraging for food, when it may be seen probing the soil with their bills or running across the surface to catch prey. Nesting Killdeer may also be observed feigning broken wings to lure intruders away from the nest site. This species is mainly active during the day, but frequently feeds at night when insects are plentiful.
Killdeer affect the populations of the insects and crustaceans they eat. They also provide a valuable source of food for their predators. Killdeer also host at least 13 different species of parasites.
Killdeer are neither endangered nor threatened according any of the organizations involved with biodiversity and conservation. They are, however, protected under the U.S. Migratory Bird Act.
Killdeer are highly adaptable and able to thrive in many human-altered habitats. Because of this, they are a very common species, with an estimated worldwide population of 1,000,000 individuals.
US Migratory Bird Act: protected
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: least concern
Killdeer live in a variety of habitats, including savannas, coniferous forests, and deciduous forest regions. They can live in many different terrain types including shorelines, savannas, and high altitude regions, but they prefer open areas, such as sandbars, mudflats and pastures.
Temperature is the most important factor that determines where killdeer can live. Killdeer remain in the same area year-round, migrating only when temperature becomes extremely cold (about 10 degrees Celsius and below). They are able to adapt to changes in the climate and in their environment. Because of this, they have been able to successfully live in human environments such as parks and farms.
Habitat Regions: temperate ; tropical ; terrestrial
Terrestrial Biomes: taiga ; savanna or grassland ; forest
Other Habitat Features: urban ; suburban ; agricultural ; riparian