What is in this image? Describe it in Simple English. As plain and simple as possible. No complex words, no long sentences. Still make sure to describe everything in the image.

This is a drawing of three birds sitting on a branch. Each bird has a winter hat. The bird on the left has a hat with a small ball on top. The bird in the middle has a hat that looks like an acorn, and the bird on the right wears a hat with a floppy end and ball. The birds look like a cartoon and are not colored in. They seem happy and friendly.