This mod requires The Sims 4: Cottage Living to function, as it uses the base mechanics from that pack.
The White Duck acts exactly like the standard hens in the game. It can be assigned to a chicken coop, where it will lay eggs. White Duck at Kalino
This mod is considered a must-have for players who want to expand their rural, animal-focused gameplay beyond the default options. If you'd like more, I can: This mod requires The Sims 4: Cottage Living