The definitive hummingbird facts: did you know? tier list - rank, compare, and debate the best and worst hummingbird facts: did you know?. Place each item from S (GOATed) to D (bottom tier) and share your hummingbird facts: did you know? rankings. Made for fans who love ranking hummingbird facts: did you know?, this tier list maker is free, easy to use, and perfect for settling debates on TierBuddy. Popular categories include birds, hummingbirds, wildlife, bird-watching.