In this scene the guy goes out on a ledge (which is on top of a moutain were the flying beast nest) and his flying reptile thing rejects him at first but later the bond and are flying partners. What movie is this?

Uhm. Avatar?

When I saw avatar it reminded me of this movie but I could not remember the title...

Possibly a scene from
The TV miniseries

Dinotopia

One of the brothers decides to become
A fully fledged Skybax Rider, but he must
Calm his flying dino down and earn it's trust

-View Clip- (http://www.tudou.com/programs/view/j1QbpZJ3cTA/)
2:30/10:35

Thanks that was it!