Delevan NWR and the other refuges of the Sacramento Complex are best known for the large number of waterfowl, but also host shorebirds, waterbirds, raptors, songbirds, reptiles, and mammals. Click the link to visit the Sacramento NWR's wildlife page.

Refuges are important to wildlife because they provide unique habitats including wetlands, vernal pools, alkali meadows, grasslands, and riparian forests. Click the link to visit Sacramento NWR's habitat page.