Sunday, December 12, 2010
Restoration in Minnesota began in the 1960s, with birds from Red Rock Lakes released near Minneapolis. Through the 1980s and 1990s, the Minnesota Department of Natural Resources actively collected eggs from both wild and zoo stock to propagate wild populations of swans. The first releases occurred in 1987. By 2004, Minnesota populations exceeded 2000 individuals. See The Trumpeter Swan Restoration Project website published by the Minnesota DNR for more details and from which most of this data comes. Kim Eckert in A Birder's Guide to Minnesota, however, warns "this population may not yet be fully viable since it is still being augmented by introductions and is often locally reliant on hand-outs from humans." The species is of regular occurrence in Minnesota, with both migratory and resident populations. Active state restoration programs have also been successful in South Dakota, Iowa, Wisconsin, Michigan, Ohio and Ontario.
Posted by Dan Tallman at 10:54 AM