Apparently, the killdeer who hang out in our son and dil's yard decided that Phillip's play set area would be a safe place for their three eggs. You know, a place with not much activity going on and where half the neighborhood kids don't hang out. Here he/she is looking relaxed while foraging the lawn for insects.
These three speckled eggs are almost directly at the bottom of the slide where both the male and female take turns sitting on them. Incubation last for 24-28 days and I've read that the baby killdeer come out running once hatched. The eggs are huge compared to a robin's egg. There's no nest to speak of, only a slight depression in the mulch.
When the killdeer is disturbed or feels you're getting too close to the nest, it goes into its broken wing display in hopes that as you pursue it, you'll be led farther and farther away from the nest. Then when the killdeer feels the young are safe, the broken wing suddenly heals and the bird flies away calling a loud "KILL-DEER" that sounds like a jeer. Here it is faking an injury.
Most of my information about this bird was taken from All About Birds and Birdwatching. This is a fascinating bird, a shorebird that's different than most because it often nests and lives far from water.
My favorite piece of information that I read about killdeer in Birdwatching is that seeing just one baby killdeer will bring a smile to the grouchiest face in town.