Trumpeter swan non-native Eurasian mute swan population who compete for habitat. One of the largest conservation sites for the trumpeter swan is located in Lois Hole Provincial Park. It is located adjacent to the renamed Trumpeter subdivision of Edmonton, Alberta within Big Lake. Joe Johnson, a biologist for the W.K. Kellogg Bird Sanctuary, part of Michigan State University’s Kellogg Biological Station, obtained trumpeter swans from Alaska for re-introduction to Michigan beginning in 1986. The population has grown via continued re-introductions and organic growth to 756 birds by 2015. The native swans have benefited from removal of non-native mute swans by the Michigan
Trumpeter clock were very simple in design, producing a simple bugle call that is reproduced once for each hour. In the later years the musical abilities of the clocks greatly improved, and many examples were made to produce complex musical tunes. Although many different makers made the trumpeter clocks, Emilian Wehrle was without question the undisputed leader of trumpeter clock production and design. A trumpeter clock can be found in several different variations. The most common examples are known to collectors as a "blowers" or "German buglers". These examples use a modified cuckoo type movement that produces a simple trumpet like call.