Our rooster was killed by a weasel while defending his hens a few years ago, so this fellow was referenced from various on-line photos. He's drawn with colored pencils on Strathmore 400 Smooth Bristol board paper.
After struggling with horse anatomy from photos, I finally decided to search for white horses, figuring that I would be able to see details more easily than on darker photos. It worked out well, the details were much more discernible.