Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
aerialist raptors
copyright UW Sea Grant, writer: L. Wiland, design: T. Yao contact us credits

Trumpeter Swan – Song

Trumpeter Swans call with a deep, trumpet- or bugle-like honking—hence their name! This loud sound is produced when air is forced through the long windpipe that runs through the keel of the bird’s breastbone.