Killdeer

We have no photograph of this bird and we never saw it. What we have is a sound, heard from a campsite at Cedar Pass after the light went, coming from somewhere out on the flat ground: two syllables, high and thin, repeated with no particular urgency, moving a little each time. Killdeer. The bird is named for the noise it makes, so unlike almost everything else on this site, hearing it was enough to name it. The National Park Service writes the call out as kill-deer, kill-deer, and Linnaeus, in 1758, called the species vociferus, which is Latin for noisy. Two separate people, two centuries apart, arrived at the same conclusion: this bird will not shut up.

It is a plover, which puts it in the shorebird family, and it was calling in the middle of a South Dakota prairie thirty miles from anything you could call a shore. That is normal. Killdeer want open ground with almost nothing growing on it, and whether that ground is a mudflat, a plowed field, a road shoulder, a parking lot, or a flat gravel roof appears not to matter much to them. A campground is close to ideal. An adult is about robin-sized, 7.9 to 11 inches long with a wingspan around 18 inches, brown on top and white underneath, with two black bands across the chest and a red ring around the eye. The rump is a dull orange you only see when the bird opens up.

Which brings up the thing killdeer are actually famous for. The nest is not a nest. It is a scrape, a shallow dip pressed into bare dirt or gravel, holding four eggs speckled to match the stones. When something large approaches, an adult leaves the eggs, crouches, drags one wing as though it is broken, and hauls itself away across the ground looking like the easiest meal available. The predator follows. The bird flies. The Park Service notes, with what reads like affection, that killdeer often switch which wing is broken partway through the act.

The population is the part worth knowing. Killdeer are common enough that most people in North America have heard one without knowing it, and Partners in Flight puts the global total near 2.3 million. Even so, the IUCN reassessed the species in 2024 and moved it off least concern to near threatened, alongside a wider reassessment of North American shorebirds that are dropping faster than anyone expected. A bird you hear everywhere can still be going away.

So the entry in our notebook for September 16 reads killdeer, heard, not seen, and it stays that way. There is something fitting about it. Of all the animals at Badlands, this is the one whose whole identity is a sound, and the sound is all we got.