Going to birds

When I wanted mo draw a stylized bird I just printed "birds" in Pinterest to get millions of birds. I choose the most cute - Fairy Wren and Robin:

Little Robin Redbreast

Came to visit me;

This is what he whistled,

Thank you for me tea.

I made a couple of drawing to get the most characteristic details, to simplify the shape (already quite simple).

And even more simple -