WhenToBird

Birding spots · Oregon

Best Birding Spots in Union County, Oregon

Thief Valley Reservoir leads Union County's birding spots with 193 species reported, best in fall. 33 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.