The winter food sources are slim so ducks are quick to gather for handouts at the north end of the millpond. I use this method of amassing them so I can count how many are there at night. I take the photo home to see it enlarged and paint a dot on each duck. Every tenth dot, I add a second color just so I don’t lose count along the way (right).
Just for fun, take a guess how many there are in this picture before clicking the headlline of this post to see the correct number in a comment.