I live in the country and have a gravel driveway.. A couple of days ago I noticed a Killdeer pair paying close attention to some of the stones at a corner of the driveway.. They were taking turns rubbing their tummies on the ground... I took a rough shot out the window of them doing their thing.
Today I went out and see there is an egg. Darn.. Now I have to be careful not to run over it with my lawn tractor. Not only that, but every time I walk out the door, the birds start squawking loudly and flopping around doing the 'injured' act on my driveway to distract me from the nest. 
It's not much of a nest.. Kildeers just lay their eggs on the ground......

