By Stu Mills, CBC News Ottawa, August 13, 2017
The town of Smiths Falls is using swans to drive Canada geese from a park near the Rideau Canal, but the plan seems to be backfiring.
"We come here a couple times a day and the geese and swans are friends," said retiree Rob Kettles.
(...)In a page outlining the threat to native species, Environment and Climate Change Canada says pairs of Mute swans typically establish territories of 0.2-5.0 hectares and defend them from other Mute swans and other wetland-dependent birds and mammals.
http://www.cbc.ca/news/canada/ottawa/geese-have-no-fear-for-swans-1.4243255