Okay I searched for "wintergrasp" "druid" and found nothing so sorry if this is a repost.
So Normally if you want to get from Dal to say Borean Tundra (for daily or w.e) you have to fly around Wintergrasp because if you go over on say a proto drake it will dismount you can cause you to flall slowly to the ground.
However, if you fly over in your 280% flight speed druid bird form then when it dismounts you, it will put a parachute on you and you will fall slowly, but will still have the horizontal speed of 280%
With this you can completely bypass wintergrasp without ever landing. This is not working as intended so I consider it an exploit, but it's only slightly useful so it's more of a trick; a lot of druids might already know about this /shrug.