The Silly Duck was added to the game along with the other farm pets on November 22nd, 2019, after the Jungle Egg. It is currently only obtainable through trading with other players or by hatching one from a Farm Egg if you happen to still have one. Another Uncommon pet from the Farm Egg is the Drake.
The Silly Duck has a long green head with a white stripe on its neck, a flat yellow beak, black eyes, a white body, and yellow feet. It tends to sway back and forth and bob its head while moving.
Here are the tricks the Silly Duck learns in order :
Sit - Newborn
Lay Down - Junior
Bounce - Pre-Teen
Joy - Teen
Dance 1 - Post-Teen
Dance 2 - Full Grown