Here is a Pattern for a cute amigurumi duck, He was inspired by the goose from the childrens book What the ladybird heard.
This is recommended as easy/beginner pattern.
I used just a basic acrylic dk yarn yarn and a 3.5mm hook. My duck is 12” tall from head to bum. You can of course use any yarn with the recommended hook size, your duck will turn out to be bigger/smaller depending on the yarn and hook size.

You will need: Approx 70g of dk yarn
Stuffing
Safety eyes
Tapestry needle
Stitch marker (scrap of yarn)