Baker, R. and J. Hines. 1996. Black tern sightings in Minnesota: 1990-1995 aquaculture sites. Final report submitted to the U.S. Fish and Wildlife Service, Region 3 Nongame Bird Program. 14 pp.
A compilation of black tern (Chlidonias niger) observations reported from Minnesota during the period of 1990 - 1995, including responses to a 1991 poster survey, yielded information about 454 unique locations where the species was sighted, including 63 locations where nesting was confirmed. These results provide a qualitative description of the current distribution of this species in the state. Black terns were observed in 71 of the state's 87 counties, and the species appears to remain well-distributed throughout the range of appropriate habitat in Minnesota. The relative paucity of observations throughout the state's prairie and prairie-forest transition regions, however, are a reminder of the deterioration and loss of wetland habitat that has followed the conversion of this land to agriculture and other uses.