anybody know what happens when u get 10 feathers an all borgia flags

I've got 9 feathers and there's just one i cannot get. I've tried everything, even parachuting from the closest higher building. :brickwall

Been neglecting this for a while now , need to get back on it

ive not tried getting them yet as i have neglected the game to. i have a crimbo holiday to look forward to lol

I'm trying to get through 3 games while i'm on hols.

Assassins 2
Resident Evil gold
Mass effect 2.

I'm concentrating more on mass effect,kinda put assassins to one side..
liking mass effect,just ticking me off a bit collecting the minerals.That element zero is almost non existent and plus having to do the ship upgrades,just one of the ship upgrades is 50000 in minerals,the only thing i got to do is recruit Tali,and do the IFF mission..