Located at the tip of the Delmarva Peninsula, this area is one of the most important avian migration funnels in North America. Each fall, like colorful clockwork, the refuge is the scene of a spectacular drama as millions of songbirds and monarch butterflies and thousands of raptors converge on their voyage south. Favorable weather patterns push migrating species through the area in waves. Clouds of tree swallows swirl over ponds and flame orange and black-winged monarch butterflies float aloft. Protected habitats such as these provide critical stopover areas where birds and butterflies can rest and feed before resuming their arduous journey.