About the Encounter:
It is important to note that you have a limited area in which you are allowed to fight. If you walk too far from the quest giver you will fail the quest. This means limited kiting. I would say you should try to stay within a 20 yard radius of the quest giver. This is a multiple wave event and you will have 5-10 seconds of rest between each wave.
The Opponents:
There are 4 waves of enemies:
Wave 1:
2 Birds 1300-1700 health-Melee attacks for 350-700 on 0-1k armor
Wave 2:
2 Birds 1300-1700 health-Melee attacks for 350-700 on 0-1k armor
Wave 3:
3 Birds 1300-1700 health-Melee attacks for 350-700 on 0-1k armor
Wave 4:
1 Bird 10k-12k health-Melee attacks for 1200-2500 on 0-1k armor
This bird also has a pushback ability with about 2 seconds of cast time.
The pushback does no damage
Multiple pushbacks can lead you far enough from the quest giver to fail the quest
My Experience:
I soloed this quest as an elemental mage at 70. I would rate the encounter as moderately difficult because of the limited area in which to fight. Still, I would strongly suggest that this quest be done in a group.
I was able to use all of my crowd control abilities including Polymorph, Blast Wave, Frost Nova, Frost Bolt, and Cone of Cold. Having cold snap with three ice barriers made a huge difference as well. I fought him with 6800 health (add 3 ice barriers for nearly 10k). I did pop a potion mid battle but it turned out to be unnecessary, his attacks while very large were not fast enough to make his DPS as scary as his crits.
I would suggest that any mage who wants to fight him solo open on him with a polymorph to prep a larger damage spell as an opener.
Be prepared that all CC seems to break about 50% quicker on the big bird. Expect 6-9 seconds on Polymorph, and 5 seconds on Frost Nova.