I tried to solo this crazy bird a second time, the first time horribly failing at it (to low health and not really got any preparation for it) I decided to grab some consumables yesterday and giving it an other shot I also got some new gear in the last weeks. After an hour of wiping at silly random stuff and trying to get the hang of the tornado phase I managed to kill it. So I decided to post the tactics for those interested. Its basically the tactic as in the movie posted below but seeing the poster doesn't really explain much I had to figure it out myself.
I went in as a survival hunter and have around 520ilv atm.
The hunter video I used as a guide had way lower gear so I guess the key part is having enough health around 500k. Its the fly only tactic. You can find his movie here on youtube:
http://www.youtube.com/watch?v=y7j-3ork9cM
The hardest part by far is simply surviving the tornado phase.
Consumables I used: Flask of the Earth, Runescroll of Fortitude III(Stamina buff if you dont have a priest buff available) and Optional some Agi foods. The guy in the video also used also BoK
I only had health pots and bandage available no HS unfortunately.
Talents used: Exhilaration, Powershot, Thrill of the Hunt, A Murder of Crows
Glyphs Used: Glyph of Animal Bond, Glyph of Deterrence, Glyph of Misdirection
Simply start the pull unload as much as you can, Serpent, Black arrow, Explosive,Crows and try to get a power shot off. Start picking up feathers and fly as close to her as possible.(after you are up use a Bandage or Exhilaration) Personally for the first half lap I simply focused on getting as many rings as possible, to make sure I got the Powershot casting time down as fast as possible. After she went for her first pass down I started fully unloading everything while still getting the rings. you have about 3 laps I believe and by the third one she should be around 50% or lower (I was usually around 46% or so) and that was with still trying to get the feel of the flying and grabbing rings.
When she starts the tornado phase, wait 4-5 seconds near the fire wall (entrance) and keep shooting. Important dont land outside on the rock yet! or be outside the ring yet this is IMPORTANT because else you simply wont survive. I had a lot of hit and misses here (to soon/to late, agroing the birds etc) also important that you are at FULL health when you start this phase or its basically byebye. When you are at around 40/30% health Deterrence and Exhilarate and readiness. At this point you should be around 10 seconds left into the phase simply deterrence again and Exhilarate again. (use a health pot or bandage or HS if you have it available) dont try to use all of them. When she crashes run to the left side drop a snake trap, summon your pet. DO NOT summon it during the firestorm because 9 out of 10 you aggro the birds hell dont even summon it while your still on the rock. You got like 10-20 seconds time and doing nothing anyway so just run to the side and then summon.(Remember a little up I mentioned silly wipes?

Depending on your health feel free to use the remaining items available to you (bandage,pot or HS) aim for about 50% health if possible around 250k the higher the better tho so dont be shy using everything at this point. Because you will be receiving around 225k damage during this phase(without getting hit by the boss if you do, you might not survive).
When she comes running to you try to make her run over the trap (she actually missed mine during my kill). MD pet and send it in keep moving away from her because agro will stay on you. Blow your stampede (a gift from heaven)
Feign death and stay down for a couple of seconds so she completely stays on your pets. She has to claw trough 5-6 of them so it will take so much time she lifts off again.
You either survive this phase with quite some health left or with a slither of health left no worries grab the feathers asap and get back up. Don't freak like I did

I hope some of you might find this useful, I for one am adding this crazy bird to my weekly farms XD