Aristide Maillol's Nymph and Mallard Ducks Outside Hirshhorn Museum and Sculpture Garden, by Unknown, 1975, Smithsonian Archives - History Div, Visitors to the Hirshhorn Museum and Sculpture Garden in June not only saw Aristide Maillol's Nymph but also this wild mallard duck, proudly swimming with her young. A pair of mallards surprisingly had made the garden their home..