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
The canvasback is a large duck that dives for food such as seeds, buds, leaves, tubers, snails, and insect larvae.
Page Photo Credits All photos courtesy of USFWS unless otherwise noted.
Last Updated: Jan 21, 2015