HOW TO TELL THE DIFFERENCE BETWEEN A PIPING PLOVER AND A KILLDEER
This past week, we have received a half dozen reports of “plovers” nesting in local parking lots. Folks are correct, they are a type of plover, but they are not Piping Plovers. The bird is a more common sort, a Killdeer, and Killdeers, like Piping Plovers (and other species of plovers), share many similar courting, nest scraping, mating, and defensive behaviors.
Killdeers have been nesting in the dunes and in the Good Harbor Beach parking lot for a number of years, and some years they even have two broods. Last year, the first brood of the season hatched from a nest in the dunes, the second brood, from a nest at the perimeter of the parking lot. For the second nest, Gloucester’s amazing DPW crew put up a large rock adjacent to the nest, to prevent cars from driving over the nest.
We don’t hear as much about Killdeer Plovers because they are not an endangered species. Killdeers are found in every state of the continental US, Alaska, Canada, Mexico, Central and South America. They are the least shorebird-like of shorebirds because they breed and dwell in many types of habitats including grasslands, fields, urban areas, gravel pits, airports, parking lots, athletic fields, and golf courses. Despite their super ability to adapt to human habitats, it is a species in decline.
Killdeers are nearly twice as large as Piping Plovers, but you wouldn’t know that unless you see them side-by-side. The easiest way to tell the difference is Killdeers have two black collar bands whereas PiPls only have one.
The back and wing feathers of the Killdeers are a mid-shade of brown, with rust and orange under wings. This coloration more easily blends with gravel pits, grasslands, and scrubby dune habitats. The Piping Plover’s wing and back feathers are a soft pale gray, in shades of driftwood and sand; the birds are much better camouflaged for beach life. The Killdeer has a red eye ring, the Piping Plover’s eyes are jet black. Killdeer’s bills are more elongated and are a solid black, the PiPls’s is shorter and orange, tipped in black. Piping Plovers have orangish legs; Killdeer’s legs are light buff and light gray.
The feathers of the Killdeers at Stage Fort park blend beautifully with gravel, scrubby grass, and dirt found there in the parking lot. Notice in the third photo in the above gallery how the Killdeer blends with its grassy surroundings.
Piping Plovers are camouflaged in coastal hues of sand and driftwood.
The same advice that applies to observing Piping Plover chicks as does to Killdeer chicks. Watch from a safe distance that does not cause the birds to flush and never pick up or touch the eggs or chick.
Killdeer and Piping Plover chicks are precocial. That is a word biologists use to describe a baby bird’s stage of development at birth. Precocial means that shortly after hatching, the bird is fully mobile. Plover chicks are not completely mature, they still need parents to help regulate their body temperature, but they have downy feathers and can run and feed themselves within moments after emerging. Both Killdeer and Piping plover chicks are well camouflaged in their natural habitats.
The opposite of precocial is altricial. Birds that hatch helpless, naked, usually blind, and are incapable of departing the nest are altricial. Robins and Cardinals are examples of altricial birds.
Even though they are not Piping Plovers, we still love to hear about Killdeers and to learn more about where they are nesting in our area. Please email me at firstname.lastname@example.org if you have any information you would like to share about Killdeers. Thank you.