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Restoration of Gavia immer (common loon) in Minnesota—2021 annual report

August 30, 2022

The Deepwater Horizon oil spill caused extensive injury to natural resources in the Gulf of Mexico, and Gavia immer (common loon) were negatively affected from the spill. The Open Ocean Trustee Implementation Group funded the project Restoration of Common Loons in Minnesota to restore common loons lost to the spill. In 2020–21, priority lakes in an eight-county region in north-central Minnesota were identified to focus project activities. In 2021, surveys on these lakes were started to monitor common loon territory occupancy, nest success, and chick survival. We surveyed 62 lakes and identified 110 common loon territories that will be included in the project. At least 1 nest attempt was observed in 78 of 110 territories, and a second nest attempt was observed in 23 territories. A third nest attempt was observed in one territory. Successful nesting was observed in 32 of 110 territories. We present no formal data analysis and plan to analyze the data after the collection of all field data in subsequent years.

Publication Year 2022
Title Restoration of Gavia immer (common loon) in Minnesota—2021 annual report
DOI 10.3133/ofr20221074
Authors William S. Beatty, Luke J. Fara, Steven C. Houdek, Kevin P. Kenow, Brian R. Gray
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2022-1074
Index ID ofr20221074
Record Source USGS Publications Warehouse
USGS Organization Upper Midwest Environmental Sciences Center