From an original aceo oil painting by Brenda Thour of a wandering whistling duck. I saw this brown duck at the Minnesota Zoological Gardens and was taken with his colouring. I don't know what kind of duck he is yet, but he is cute. ACEO stands for Art Cards Editions & Originals.They are 3.5x2.5 inches, the size of trading cards, which make them an affordable and adorable mini work of art. Copyright by Brenda Thour 2008.