When you're keeping track of big numbers, you can lose perspective.

Still, in an ongoing series, we're happy to point out that total Angry Birds downloads are now over the 50 million mark.

We're assuming that's a combination of free and paid downloads of all releases across iPhone, iPad, Android, Ovi Store, PC and Mac.

Flying high

In early December, Rovio CEO Mikael Hed gave the total as 42 million; 12 million paid and 30 million free.

Still, according to Google's Mobile Partnerships head Charles Yim, the company's overall target is 100 million downloads.

No doubt, the recently announced Angry Birds Rio will generate another burst of activity, as will the Valentine's update for Angry Birds Seasons on iOS.