A mallard duck loses his balance on the ice and is sent sliding across the surface of a frozen pond in Dortmund, Germany Picture: UDO SCHLOTTMANN / CATERS NEWS (via Pictures of the day: 28 November 2012 - Telegraph)
typhlonectes: “The Old World Swallowtail - Papilio machaon … is a butterfly of the family Papilionidae. Despite its common name Old World swallowtail, this species is not restricted to the Old World, as populations can occasionally be found in North.
Though it has the word weed in its common name, don't let that scare you away from butterfly weed (Asclepias tuberosa). Sometimes called milkweed, it's as easy to grow as a weed but much prettier, plus hummingbirds and butterflies love them!