The island also supports many other state and federally rare species, including Nantucket shadbush (Amelanchier nantucketensis), a candidate species for listing under the Endangered Species Act; several pairs of short-eared owl (Asio flammeus); piping plover (Charadrius melodus), a U.S. threatened species; least tern (Sterna antillarum); northern harrier (Circus cyaneus) and common tern (Sterna hirundo).
The island is home to numerous rare species, including the Nantucket shadbush, which is a candidate for endangered status under the Endangered Species Act. The island also supports several pairs of short-eared owls, piping plovers, least terns, northern harriers, and common terns.