If you find yourself near Madison Square Park over the next couple of weeks, be sure to stop by the mammoth sculpture in Flatiron Plaza. Created by Will Ryman, Bird stands 12' tall and weighs in at 5 tons. With the exception of the rose-in-beak, the entire sculpture comprises around 5,500 nails, both off-the-shelf and custom-fabricated. Rather than methods of attachment serving a greater composition, the nails themselves form the structure and the surface. The sculpture will be on view through April 21.