A killdeer is a common North American bird about the size of a robin, with a brown back and white belly marked by two distinctive black bands across its chest. Despite its alarming name, killdeer don't kill deer or anything else particularly large. They eat insects, worms, and other small creatures they find in fields, lawns, and muddy areas near water.

The killdeer gets its name from its sharp, piercing call that sounds like “kill-dee! kill-dee!” You might hear this cry echoing across a schoolyard or parking lot, since killdeer often nest in surprisingly open places: gravel driveways, baseball fields, flat rooftops, or even the grassy areas between shopping mall parking spaces.

What makes killdeer truly remarkable is their clever defense strategy. When a predator approaches their nest, a parent killdeer will pretend to have a broken wing, dragging it along the ground while crying out. This broken-wing display lures the threat away from the vulnerable eggs or chicks. Once the predator has followed the “injured” bird far enough away, the killdeer suddenly flies off, perfectly healthy. It's a bit of theater that has protected killdeer families for thousands of generations.