Bombay Hook NWR is an important stop on the Delaware Bay for thousands of migrating shorebirds every spring, as they make their critical trip north to their breeding grounds. At low tide they can be seen feeding by the thousands on the salt marsh mudflats along the wildlife drive. The refuge’s freshwater impoundments also provide mudflat habitats as they are drawn down each spring. During late summer and early fall, southbound migrating shorebirds also visit the refuge as they fly towards their wintering grounds. Common species include semipalmated sandpipers, dunlin, dowitchers, yellowlegs, semipalmated plovers, American avocets, and many more.