The Milwaukee Art Museum tapped its own collection for itslatest exhibition, “Catesby, Audubon, and the Discovery of a New World,”culling 60 rare prints from naturalists like John James Audubon and hispredecessors, including Mark Catesby, an English native who crafted beautiful,hand-colored etchings of America’s flora and fauna. The exhibit is on displayin the museum’s Koss Gallery until March 22.