Trumpeter swan Museum of Comparative Zoology at Cambridge, which was shot by F. B. Armstrong in 1909 at Matamoros, Tamaulipas, Mexico. Since 1992, trumpeter swans have been found in Arkansas each November – February on Magness Lake outside of Heber Springs. In early 2017, a juvenile trumpeter swan took up residence in the French Broad River in Asheville, North Carolina, marking the first such sighting in that part of the state. Non-migratory trumpeter swans have also been artificially introduced to some areas of Oregon, where they never originally occurred. Because of their natural beauty, they are suitable water fowl to attract bird
Bird vocalization and prevent an energetically costly fight . In birds with song repertoires, individuals may share the same song type and use these song types for more complex communication. Some birds will respond to a shared song type with a song-type match (i.e. with the same song type). This may be an aggressive signal, however results are mixed. Birds may also interact using repertoire-matches, wherein a bird responds with a song type that is in its rival's repertoire but is not the song that it is currently singing. This may be a less aggressive act than song-type matching. Communication through bird