Killdeer

The killdeer (Charadrius vociferus) is a medium-sized plover.

Their name comes from their frequently heard call. These birds will frequently use a distraction display ("broken-wing act") to distract predators from their nests.
This involves the bird walking away from its nesting area holding its wing in a position that simulates an injury and then flapping around on the ground emitting a distress call.
The predators then think they have easy prey and are attracted to this seemingly injured bird and away from the nest.
If the parent sees that a potential predator is not following them, they will move closer and get louder until they get the attention of the predator.
This is repeated until the predator is far from the nest, and the killdeer suddenly "heals" and flies away.

Source: wikipedia