The Canadian $1 coin is colloquially known as a what?

The Canadian $1 coin is colloquially known as a "Loonie" because it features a common loon, a bird species commonly found in Canada, on its reverse side. The name "Loonie" was coined when the coin was first introduced in 1987, as a combination of the word "loon" and the -ie suffix, which is commonly added to coins (as in "quarter" or "nickel"). The term quickly gained popularity and has since become the widely recognized and accepted term for the Canadian $1 coin.