I would have to completely agree with JaytB and love playing as a bird more than the other characters when helping lower levels. I do love helping people when they are lower levels with questing and leveling because as an archer you can fast kill through the dungeons. I do believe it comes down to a matter of opinion because I believe that in the game the three classes were made to compliment each other and pick up where the others lack. One of the things I enjoy the most and would have to agree with JaytB is the distance killing and retreating towards party members/ and or pulling single enemies attention toward party.
I very much enjoy the skills for the birds because they have skills for single out harder opponents repulse, break armor, etc or those used for damaging groups like thorn root, scream, etc (especially with a bear and mage present for REAL damage).