The Royal Swans are a flock of swans of two species—the mute swan (Cygnus olor) and the black swan (C. atratus)—the original six pairs of which were a gift to the city of Ottawa from Queen Elizabeth II in 1967, to commemorate the Canadian Centennial. Since then, the number of Royal Swans has increased to the point that they now occupy the waters of the Rideau River between Carleton University and Cummings Bridge.
- "Animal Protection > FAQs and Related Resources > Royal Swan FAQs". Ottawa Humane Society. Archived from the original on 3 December 2009. Retrieved 5 April 2010.
- "Residents > Animal Care and Control > Royal Swan Program > FAQs". City of Ottawa. Archived from the original on 23 November 2010. Retrieved 5 April 2010.