A simple egg and legs model and another version with a face. A drop of glue will be needed to attach the face to the egg.
For the egg, I recommend putting the seam at the rear of the model in your slicing software. This helps avoid little dots all over the model. If you use Prusa Slicer, this article on Seam Position helps. You may notice that I actually forgot to this in the main picture for the chicky on the left.
To get the multiple colors on the face you will need to do color changes in your slicing software. You will start by printing with the color of your chicky, then change color for the eyes, then change color again for the beak. This color change article may be useful to read.
The author hasn't provided the model origin yet.