Place the hen whose nest you wish to find, in a coop or other locked area for the night. Wait until sunrise.
Let the hen out of the coop first thing in the morning. Allow the hen to roam the yard freely. Follow the hen at a distance that will allow you to remain inconspicuous; hens know if they are being followed and will not reveal the location of their eggs.
Follow the hen until it enters a site that appears to be a suitable nesting area. Slowly approach the area and try to peek from a distance. Watch where the hen goes, while remaining silent. The hen will approach its nest to check on the eggs.