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Featured Wildlife

Tricolored Blackbirds

60 x 100 Tricolored male

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

SNWR Complex - Contact Us

Complex Graphic

The Complex headquarters are located at Sacramento NWR, in Willows, CA. CONTACT US: Sacramento NWRC, 752 County Rd 99W, Willows CA 95988. Phone:(530)934-2801. Email:

Delevan is managed as part of the SNWR Complex - Contact Us.

Learn more about the complex 

About the NWRS

National Wildlife Refuge System


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  

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Visitor Opportunities

  • Limited Viewing

    Wildlife viewing at Delevan is limited to the surrounding public roads (Maxwell and Four-Mile Roads). For greater visitor opportunities, visit Sacramento or Colusa NWRs (see "Plan Your Visit" below).

    About Delevan National Wildlife Refuge
  • Plan Your Visit

    There are additional visitor opportunities throughout the Sacramento NWR Complex! Birdwatching, photography, hiking and hunting are just a few of the things our other refuge have to offer....

    Plan Your Visit
  • Waterfowl Hunting

    150 Pintail courtship flight

    Find out more about waterfowl hunting on the Sacramento NWR Complex.

    Hunting on the Complex
  • Directions to Delevan NWR

    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
Page Photo Credits — All photos courtesy of USFWS unless otherwise noted.
Last Updated: Dec 16, 2014
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