About the NWRS
The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America’s fish, wildlife, and plants.
Learn more about the NWRS
West Sister Island is home to the great blue heron, the largest of the North American herons.
Page Photo Credits All photos courtesy of USFWS unless otherwise noted.
Last Updated: Jan 15, 2015