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Bird Checklists
http://www.npwrc.usgs.gov/resource/othrdata/chekbird/r6/46.htm
Seasonal checklists for 8 refuges in SD.
Mary Scott's Birding South Dakota
http://www.birdingamerica.com/SouthDakota/
Travelogue with photos of Lacreek NWR.
South Dakota Birds
http://huskertsd.tripod.com/
Small photo gallery.
South Dakota Breeding Bird Atlas
http://www.npwrc.usgs.gov/resource/distr/birds/sdatlas/sdatlas.htm
Full results of the project completed in 1993, with 219 distribution maps.
South Dakota Ornithologists' Union
http://www.homepages.dsu.edu/palmerj/SDOU/SDOU.html
News and events, meetings, count results, list of hotspots, listers' lists, programs, and forms.