Few years ago I was brush hogging my place.  As I was mowing just along the fence a Hen flushed and ran a short distance.  I got down and looked and she had her nest with a clutch of eggs in it.  I backed off and left it unmowed and got to watch her from a distance for the next week or so set the eggs.  Fire ants do a number on them here but these all appeared to make so far as I could tell.