Commonly used small coins are the 1-cent ("penny"), 5-cent ("nickel"), 10-cent ("dime") and 25-cent ("quarter") pieces. The two main coins are the $1 gold-coloured coin, commonly called a "loonie" (the loon is the bird engraved on one side), and the $2 silver- and gold-toned coin (the "toonie"). Paper bills come in $5, $10, $20, $50, $100, and $1,000 denominations. The Canadian dollar is not equal in value to the U.S. dollar -- it has fluctuated in recent years between 65 and 75 cents to the U.S. dollar.