Hello, That sparrow is not an Exotic drop it's actually a strike unique rewards drop item. Exotics are rare drops in Forsaken. When a player receives an Exotic, Destiny 2 will take into account all Exotics the player has found and weight them against Exotics they have yet to acquire. This lowers the player’s chances of receiving Exotics they already own. What that means is Exotics that the player does not yet own are individually weighted much higher than duplicate Exotics, but when receiving duplicate Exotics, the player is more likely to earn armor pieces as these have randomly rolled perks.