Trumpeter Swan (Cygnus buccinator) behaviour, interactions with Snapping Turtles (Chelydra serpentina), and their Pleistocene history
Keywords:Snapping Turtle, Chelydra serpentina, predation, Trumpeter Swan, Cygnus buccinator, injuries, stamping attack, duetting, clamouring, mobbing behaviour, water treading display, Pleistocene distribution, Wisconsin glaciation, Yellowstone glacier, Ontario
AbstractSnapping Turtles (Chelydra serpentina) prey on and injure Trumpeter Swan (Cygnus buccinator) cygnets. Adult Trumpeter Swans stamp on and attack turtles, and this sometimes saves the lives of cygnets. Stamping behaviour, duetting, clamouring, and mobbing are directed at predators. The stamping behaviour may be derived from the water treading display. During the Pleistocene ice sheet maxima, all Trumpeter Swans east of the Rockies nested within the range of the Snapping Turtle. Snapping Turtle predation may have selected for the stamping behaviour.
Copyright for Canadian Field-Naturalist content is held by the Ottawa Field-Naturalists' Club, except for content published by employees of federal government departments, in which case the copyright is held by the Crown. In-copyright content available at the Biodiversity Heritage Library is available for re-use under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0) licence. For usage of content at the BHL for purposes other than those allowed under this licence, contact us.
To request use of copyright material, please contact our editor, Dr. Dwayne Lepitzki: editor -at- canadianfieldnaturalist -dot- ca