I saw some of these big guys on Lake McConaughy in Nebraska a few years ago. They are magnificent birds. I'm happy to see them making a comeback.
Trumpeter Swans Re-established In Ontario, Canada
ScienceDaily (Nov. 16, 2007) — Originally native to Ontario, the trumpeter swan disappeared from Eastern Canada early in the 20th century. Restoration efforts were initiated in the early 1980s to reintroduce the trumpeter swan to its former range. Through conservation efforts the Ontario population has reached 1000, with at least 131 breeding pairs, and the future looks bright.
How the Swans Were Reintroduced
The trumpeter swan’s extirpation from eastern Canada roughly 200 years ago was primarily due to hunting pressure. Populations remaining in...(complete article here.)