Tricolored blackbirds are a colonial species that is mostly limited to the Central Valley and surrounding foothills of California. This species has been known to have over 100,000 nesting birds at Delevan NWR. They are typical found here May-June.Visit the Sacramento NWR's wildlife webpage
About the Complex
The Complex headquarters are located at Sacramento NWR, in Willows, CA.
Delevan is managed as part of the Sacramento NWR Complex.
Learn more about the complex
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
Delevan has limited wildlife viewing from the surrounding roads. During the winter visit Sacramento or Colusa NWRs for better opportunities. Limited viewing is from Maxwell and Four-Mile Roads.About Delevan National Wildlife Refuge
From Williams, take Interstate 5 north approximately nine miles to Maxwell Road exit. Drive east on Colusa-Maxwell Road for approximately four miles to graveled Four Mile Road, which parallels the west refuge boundary. From Colusa, travel north on the Colusa-Princeton Road approximately 5 miles to Colusa-Maxwell Road. Turn west and travel four miles to graveled Four Mile Road. The Delevan Hunter Check Station is located on Four Mile Road. Limited wildlife viewing is available from Maxwell and Four Mile Roads.click here to find: Directional Maps to Refuge and to Hunter Check Station
Did you know?
Often small groups of northern shovelers bring food to the surface by swimming rapidly in a circle while swinging their bills side to side. They strain aquatic vegetation, plankton, and tiny invertebrates through the comblike edges of their shovel-shaped bill.
Page Photo Credits All photos courtesy of USFWS unless otherwise noted.
Last Updated: Oct 23, 2013