My white runner just started laying here about a month ago and since she has started she digs a hole first then lays her egg in the hole she dug. Her holes are about a foot wide and 6 inches deep so they are good size holes. She will use the same one for about a week and then make another and keep trying to hide them on me. I have never heard of a duck digging a hole like that before. Is this normal and does anyone else have a duck like this? She had straw and a house and everything but still digs a hole. My other girls use the house and make a nest with straw or bring the straw outside so there is materials for her to use.