As long as I'm been painting in watercolors, I've never really thought about sketching with watercolor pencils instead of using a pencil or pen to get a line drawing. On this drawing I sketched a rough outline of these two birds, then I laid down the various details with watercolor pencils. I used a wet watercolor brush to blend in the color. To add more depth, I added watercolor paint.
I used my Stillman & Birn Beta series journal, Caran d'ache watercolor pencils, and finished the drawing off with Daniel Smith watercolors.