So I finished the quest line with my titan and got ev-37 voidstreak, I started to complete the rest on my other 2 characters and got legendary horns so im guessing that we are only guaranteed only 1 legendary sparrow besides the other 2 from the side quests. If I would have known we only get once change at sparrow i probably wouldnt wasted my time on my other characters since i can just grab the sparrows from the kisok. The last part of the quest line rewards states ---"Rewards "Winner's Circle" emblem and grants a Sparrow package, containing one Eververse sparrow"..... i should have been able to get 2 more sparrows but i guess thats not the case....since i got 2 crappy legendary horns.....