When I saw the killdeer sitting on the gravel driveway, I thought it might be injured. But when I walked nearer, it quickly stood and I saw the three eggs beneath. Killdeers typically nest on the ground among pebbles and rocks where their eggs are camouflaged, and a pair will take turns sitting on them. This couple happened to pick a busy driveway to set up housekeeping.
Marc Isolda Photography 
Such an amazing picture. I have to say hats off to you once more for being ever ready.
Great picture. Killdeer used to build their nests around the airplanes parked in the grass when I worked at the airport. They had very interesting behavior to protect their eggs:
From Wikipedia:
The parents use various methods to distract predators during the breeding season. One method is the “broken-wing display”, also known as “injury feigning”. Before displaying, it usually runs from its nest, making alarm calls and other disturbances. When the bird has the attention of the predator, the former turns its tail towards the latter, displaying the threatening orange color of the rump. It then crouches, droops its wings, and lowers its tail, which is more common for them. With increasing intensity, the wings are held higher, the tail is fanned out, and the tail becomes more depressed. Another behavior that has received attention is the “ungulate display”, where the adult raises its wings, exposes its rump, lowers its head, and charges at the intruder. This can be fatal to the displaying bird.
PHENONMANAL: PATIENCE BEGETS BEAUTY!
TOM