No. of Observations

250,902

No. of Species

2,243

No. of Sites

902

Observations by Year
2025 0
2024 3,746
2023 5,981
2022 6,640
2021 9,413
2020 12,893
2019 22,991
2018 20,504
2017 11,470
2016 22,615
2015 17,432
2014 10,379
2013 5,829
2012 8,550
2011 7,757
Species by Year
2025 0
2024 567
2023 799
2022 839
2021 834
2020 925
2019 918
2018 1,173
2017 958
2016 1,086
2015 1,077
2014 1,033
2013 933
2012 1,076
2011 964
Sites by Year
2025 0
2024 79
2023 106
2022 102
2021 110
2020 99
2019 80
2018 99
2017 91
2016 108
2015 127
2014 154
2013 129
2012 157
2011 160
Sites
Site Name Observations Last Observation
Ames, Paul 119,894 2022-11-10
Hitaga Sand Ridge Prairie Preserve 18,180 2024-08-16
Wickiup Hill Outdoor Learning Area 7,688 2024-04-13
Matsell Bridge Natural Area 7,478 2024-07-24
Wanatee County Park 6,144 2024-05-17
700 Black Bear Bend 5,187 2024-10-22
Pleasant Creek State Recreation Area, Linn County 5,104 2023-08-28
Neal Smith National Wildlife Refuge 4,721 2024-07-21
MacBride Nature Recreation Area 3,933 2024-09-08
Pinicon Ridge Park 2,833 2024-08-04
Near Fairfield 2,803 2022-04-03
Chichaqua Bottoms Sandhill Prairie 2,183 2011-07-30
Big Creek State Park 2,047 2023-06-04
Shimek State Forest, Farmington Unit 1,893 2020-09-22
Palisades Kepler State Park 1,708 2024-09-18
Inis Grove Park, Ames 1,651 2021-07-28
Yellow Banks Park 1,554 2023-06-26
Jefferson County Park 1,542 2024-07-24
Brees Yard, Saylorville 1,528 2022-10-28
Puccoon Prairie 1,444 2011-09-06
Synder Farm INHF 1,376 2013-09-08
Whiterock Conservancy 1,292 2019-10-04
1460 Douglas Ct, Marion 1,237 2024-08-21
Indian Creek Nature Center 1,224 2023-06-29
Waubonsie State Park 1,218 2023-05-21
View All Sites View Effort Trends Observations for protected species or from private sites are not included in this list.