Why Hummingbird Hums - S2.E9

There was a time when Hummingbird didn't hum. She was called Songbird and thought she could sing like a Bird, but sadly that was not the case. All the animals tried to help Songbird improve her singing but nothing worked. Then Tortoise has an idea, maybe Songbird can sing without opening her beak! Songbird agrees and hums the most beautiful hum Tinga Tinga has ever heard. From that day on Songbird was called Hummingbird.