Bird Whistlers

 Fill your Bird (the top part) with water and they make a sound like a canary (I guess). The price would usually be: 3 for 19 cents. But today: The most probably about 6 or 5 dollars (the plastic).

Here's a picture:

I personally never used one but they look funny I think you probably didn't even sound like a bird maybe you sounded like a weird person whistling badly and scared the birds away. But they still do sell them this time and their not that hard to come by but some are really expensive maybe a wooden one today made way bak would be expensive but today the plastic ones are like 1 dollar or 2.

Here's a picture:
(Their colorful)