Aguila in Canada
Others have been kind enough to post a sticky containing the "approved ammunition" information for Canada.
Super Colibri is not an approved ammunition and cannot be imported.
In addition, while it is possible to buy it in the U.S. , the U.S. has stringent export regulations, which prohibit taking such ammo out of the their country. Consequences can include loss of priveleges to travel to the U.S. and possible jail sentences, if caught in possession of such ammo on their side of the border.
I have shot Colibri from years ago, and while quieter than other .22 ammo, I find CCI cb longs accurate, cheap, relatively quiet, compared to standard .22 ammo.