Even though the choices are split, I'm going to bump this with another entry anyway. I want to keep this going, we're not even getting started yet.
You try to pull yourself on top of the bird as it flails through the sky. An opportunity like this only does come once in a lifetime... Or, several lifetimes. Thinking you have this savage beast outwitted and at your mercy to roam the heavens, it spins over.
You can't grip onto the bird's slick feathers and fall into the canopy. Small, thin branches crack and rip apart under the weight of your body as you desperately try to grab hold of something. A vine: it snaps. Another vine! No, that's a snake. Your back hits the trunk of one tree and knocks the wind out of you, and your head slams into the thick branch jutting out from it. Your vision is swathed in darkness as you tumble helplessly to the ground.
*Later*

Your eyes perk open to the crackle of leaves and twigs. Not only are you alive, but you landed near a beaten path, and someone is nearby! You open your mouth to speak, but only manage a raspy wheeze. The figure lurks closer, and you wonder if you really want to be found by strangers in a place like this. They might scalp your head and trade it for magic beads. You feel limber enough to get up, although walking might be another story, let alone running.