I had a couple mallards visiting when I lived in a remote cottage in Scotland. They would fly in for bread cubes every day which eventually they ate from my hand., but when I didn’t see them arrive the female would waddle around the cottage and jump up on the window sill to the living room where I was sitting and tap until I went around to the front door and fed them.

-0-0-0-0-0-

Wonderful.  thank you Fred for sending this.