No. of Observations

8,438

No. of Species

748

No. of Sites

325

Observations by Year
2025 0
2024 922
2023 1,084
2022 1,018
2021 920
2020 627
2019 467
2018 441
2017 567
2016 634
2015 180
2014 240
2013 267
2012 332
2011 226
Species by Year
2025 0
2024 233
2023 286
2022 285
2021 178
2020 209
2019 137
2018 167
2017 172
2016 193
2015 94
2014 112
2013 93
2012 134
2011 110
Sites by Year
2025 0
2024 65
2023 93
2022 67
2021 42
2020 57
2019 40
2018 32
2017 33
2016 38
2015 33
2014 36
2013 36
2012 26
2011 33
Sites
Site Name Observations Last Observation
Hitaga Sand Ridge Prairie Preserve 1,294 2024-08-16
700 Black Bear Bend 730 2024-10-22
Wickiup Hill Outdoor Learning Area 464 2021-06-05
1460 Douglas Ct, Marion 386 2024-08-14
Pinicon Ridge Park 232 2024-08-04
Matsell Bridge Natural Area 224 2024-07-24
MacBride Nature Recreation Area 193 2024-09-08
Palisades Kepler State Park 184 2024-09-18
F. W. Kent Park 184 2024-08-03
Wanatee County Park 168 2023-09-05
Near Fairfield 160 2021-07-22
Plymouth Rock 143 2023-10-01
Big Sand Mound Prairie Preserve, Muscatine County 141 2024-10-11
Shimek State Forest, Donnellson Unit 124 2024-08-18
Pleasant Creek State Recreation Area, Linn County 110 2023-08-28
Jefferson County Park 109 2024-07-23
2505 Tullamore Lane, Ames 95 2021-05-16
Red Oak Prairie 76 2023-07-15
Geode State Park 63 2024-08-18
Ackworth- John Pearson 62 2010-05-26
Heritage Valley 59 2022-10-01
Ciha Fen Wildlife Preserve 58 2024-07-20
Indian Creek Nature Center 52 2023-06-29
Timberhill 50 2023-06-27
Saint Sebald Lutheran Church 50 1983-08-13
View All Sites Observations for protected species or from private sites are not included in this list.