The most important rule: Make the head really tiny.
Truly, you have no idea how absolutely minuscule a chicken head is until you try to draw one.
In fact, I'd go so far as saying that the first times you draw a chicken, don't even bother drawing a head at all; just make the neck taper to a...
I have to ask: If I win, will you pay for the shipping? I'm not American, I live in the Old World, even such a small thing as a Calendar might bring a hefty shipping price.
My two entries.
The first one is an old drawing I did in graphite on a standard white A4 paper. I drew from a photo someone had taken of my hands holding a day-old chick.
The second one is photos of a blown white chicken egg on which I've painted an image of my sister with a hen on her...