Hi there. The Eververse store's loot pool changes with each season and includes items from multiple past seasons. While that sparrow is not currently in the loot pool, it may return in a future season, though we do not know when or which items until the calendar is released. You can stay up to date on the Eververse calendar [url=https://www.todayindestiny.com/eververseCalendar]here[/url].