California

• Big Basin Redwoods State Park – West Central CA
  
• Colusa National Wildlife Refuge – North Central CA
  
• Death Valley National Park – East Central CA
• Golden Gate National Recreation Area – West Central CA
• Jedediah Smith Redwood State Park – Northwest CA
• Joshua Tree National Park – South Central CA
• Kern National Wildlife Refuge – South Central CA
• Kesterson National Wildlife Refuge  – West Central CA
• Kings Canyon National Park – Central CA
• Lassen Volcanic National Park – North Central CA
• O’Neill Forebay Wildlife Area
• Lower Klamath National Wildlife Refuge – North Central CA
• Merced National Wildlife Refuge – Central CA
• Mount Tamalpais State Park – West Central CA
• Northern Sacramento Valley Birding Hotspots – North Central CA
• Pinnacles National Park – West Central CA
• Point Reyes National Seashore – West Central CA
• Redwood National Park (information coming)
• Sacramento National Wildlife Refuge – North Central CA
• San Luis National Wildlife Refuge – Central CA, Photos
• Sequoia National Park – Central CA
  
• Tule Lake National Wildlife Area – North Central CA
• Yosemite National Park – Central CA

Additional Resources: 

• Map with links to all National Wildlife Refuge Locations in California