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1. 
   dvergsvane Cygnus columbianus

   Rapporter

   vurdering 2

   1 vurdering

   Garrett MacDonald

   24. nov 2023

   USGS Northern Prairie Wildlife Research Center (restricted access), Stutsman, North Dakota, United States

   ML611501777
2. 
   dvergsvane Cygnus columbianus

   Rapporter

   vurdering 1

   1 vurdering

   Aric Gjervold

   27. apr 2022

   Fargo--South River Prairie, Cass, North Dakota, United States

   ML441880601
3. 
   dvergsvane Cygnus columbianus

   Rapporter

   vurdering 3

   2 vurderinger

   Keith Corliss

   6. apr 2019

   3300 165th Avenue Southeast, Mapleton, North Dakota, US (46.935, -97.01), Cass, North Dakota, United States

   ML352385821
4. 
   dvergsvane Cygnus columbianus

   Rapporter

   vurdering 3

   1 vurdering

   Keith Corliss

   6. apr 2019

   3300 165th Avenue Southeast, Mapleton, North Dakota, US (46.935, -97.01), Cass, North Dakota, United States

   ML352374001
5. 
   dvergsvane (columbianus) Cygnus columbianus columbianus

   Rapporter

   vurdering 3

   4 vurderinger

   William W. H. Gunn

   28. apr 1961

   Lower Souri's Refuge Nr. Upham, North Dakota, United States

   ML62650
6. 
   dvergsvane (columbianus) Cygnus columbianus columbianus

   Rapporter

   vurdering 2

   4 vurderinger

   William W. H. Gunn

   27. apr 1961

   Lower Souri's Refuge Nr. Upham, North Dakota, United States

   ML62649
7. 
   dvergsvane (columbianus) Cygnus columbianus columbianus

   Rapporter

   vurdering 2

   4 vurderinger

   William W. H. Gunn

   25. apr 1961

   Lower Souri's Refuge Nr. Upham, North Dakota, United States

   ML62648