Flight: Avians have a flying speed of 30 feet. They can only fly if they are not wearing medium or heavy armor.

Talons: Avians deal unarmed strikes with 1d4 slashing damage.

Aquatic adaptation: Waterfowl have a swimming speed of 30 feet.

Wing buffet: Once per long rest, Waterfowl can use their reaction to knock a creature within 5 feet prone if the creature misses the Waterfowl with a melee attack.

Bounce and quack: Ducks have advantage on Acrobatics checks to tumble, dodge, or avoid grapples. They may fall prone as a reaction to halve falling damage. Once per long rest, they can cast Feather Fall on themselves as a reaction, even if they aren't falling.