A preliminary check-off list of avian species was compiled using regional field guides shortly after the establishment of the field station (Northern Plains Biological Field Station Committee 1987). While this list has been a useful reference, little observational data have been available to establish accuracy. Field observation data were collected to verify this checklist and establish a baseline inventory of resident and migratory avifauna for the station. Obse1vations were collected Janua1y 1994 through August 1996 during bird watching expeditions and research activities. In addition, formal bird counts were conducted at eight sites along 100 m transects of 30 m fixed width from 16 May to 23 June 23 1995. Birds were tallied, based upon sight and call, along each transect on twelve dates.
South Dakota Bird Notes
In Copyright - Non-Commercial Use Permitted
Bakker, Kristel K. and Troelstrup, N. H. Jr., "Birds of the Oak Lake Field Station" (1998). Oak Lake Field Station Research Publications. 2.