Delevan National Wildlife Refuge
|Delevan National Wildlife Refuge|
IUCN category IV (habitat/species management area)
|Location||Colusa County, California, United States|
|Nearest city||Colusa, California|
|Area||5,797 acres (23.46 km2)|
|Governing body||U.S. Fish and Wildlife Service|
|Website||Delevan National Wildlife Refuge|
More than 200,000 ducks and 100,000 geese come to the refuge each winter. With 95 percent of the wetlands of the Central Valley lost over the last 100 years, waterfowl have become increasingly dependent upon the refuges of the Sacramento Valley section.
The refuge supports several endangered plants and animals: giant garter snake, wintering peregrine falcon and bald eagle, breeding tricolored blackbird, and a large colony of the endangered palmate-bracted bird's beak (Cordylanthus palmatus) plant.