Birding spots · California
Best Birding Spots in Colusa County, California
Colusa National Wildlife Refuge (Powell Slough) leads Colusa County's birding spots with 184 species reported, best in spring. 15 spots in the county have enough data to rank.
Species counts are birds reported at least three times in that season at that spot, 2016–2025. Busy spots list more species simply because more people look, so compare the checklist counts. Spot names come from public map data and hotspot listings.
| Spot | Species | Winter | Spring | Summer | Fall |
|---|---|---|---|---|---|
| Colusa National Wildlife Refuge (Powell Slough) | 184 | 134 | 145 | 94 | 127 |
| Colusa National Wildlife Refuge | 180 | 134 | 144 | 90 | 132 |
| Colusa National Wildlife Refuge (northeast) | 157 | 102 | 109 | 64 | 103 |
| East Park Reservoir | 147 | 95 | 72 | 53 | 94 |
| Colusa National Wildlife Refuge (south) | 145 | 76 | 113 | 75 | 92 |
| Colusa-Sacramento River State Recreation Area | 127 | 79 | 71 | 57 | 53 |
| Delevan National Wildlife Refuge | 85 | 62 | 36 | 21 | 18 |
| Upper Letts Lake | 56 | 22 | 28 | 26 | 23 |
| Birding spot near College City | 115 | 77 | 103 | 22 | 33 |
| Birding spot near Maxwell (south) | 94 | 57 | 39 | 51 | 50 |
| Birding spot near Maxwell | 74 | 66 | 28 | 4 | 38 |
| Birding spot near Williams | 66 | 35 | 24 | 36 | 37 |
| Birding spot near Maxwell (south) | 60 | 19 | 25 | 37 | 38 |
| Birding spot near College City (northeast) | 56 | 41 | 20 | 8 | 27 |
| Birding spot near Arbuckle | 55 | 20 | 31 | 41 | 30 |