User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-7216770-20130412195605/@comment-5790858-20130413140603

First off, I'm pretty sure there is nothing in the programming of the game that makes Legendary dragons like tree. What you found was either a glitch, or you just got lucky. Second, this isn't for just talking about anything Skyrim related, this is for talking about this specific update.