Angry Birds Seasons Ham'O'Ween episode introduces new bird

On the occasion of Halloween, which is a few days ahead, Rovio Mobile has released an update to Angry Birds Seasons called Ham'O'Ween. The Ham'O'Ween episode comes with 30 new levels and a new bird. This episode also marks the beginning of the 2012 seasons.
Now, Angry Birds Seasons is divided into two sections after one hits 'Play' on the main screen: 2011 seasons and 2012 seasons. Ham'O'Ween is the first and only episode in the new 2012 seasons.

The new bird which comes with this update is a small 'orange bird' as people call it. Once launched, it can be made to puff up to a big ball for a few seconds which makes the pig fortresses explode from within.

Rovio Mobile also made a small intro video for this bird:

Currently, the Ham'O'Ween update is available for iOS only.

Angry Birds Seasons Ham'O'Ween episode introduces new bird