Egg Identification

What kind of bird egg is it?

While walking during lunch the other day I came across this tiny blue, spotted bird egg sitting on the curb-side. Although the above picture isn't the greatest - believe it or not the paper I used for the background is white even though it looks more blueish, it does illustrate the eggs size. I placed it beside the egg of a standard Black Sex-Link chicken.

In the picture below it's beside a dime. As you can see the egg is quite small. I am having a difficult time trying to identify the type of bird this egg belongs to. I could use your assistance. There's a lollipop in it for you...