Birding spots · Iowa
Best Birding Spots in Marshall County, Iowa
Grammer Grove Wildlife Area leads Marshall County's birding spots with 158 species reported, best in spring. 8 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 |
|---|---|---|---|---|---|
| Grammer Grove Wildlife Area | 158 | 35 | 134 | 88 | 120 |
| Sand Lake | 157 | 45 | 135 | 66 | 86 |
| Arney Bend Wildlife Area | 124 | 14 | 101 | 44 | 79 |
| Timmons Grove South County Park | 122 | 21 | 115 | 32 | 26 |
| Hendrickson Marsh Wildlife Management Area (east) | 120 | 1 | 108 | 54 | 35 |
| Grimes Farm & Conservation Center | 74 | 10 | 52 | 48 | 22 |
| Green Castle Recreation Area | 71 | 13 | 54 | 50 | 20 |
| Birding spot near Marshalltown | 86 | 1 | 63 | 57 | 38 |