But while the Practice and Science is a good manual, it's entirely different to put drawing concepts into practice. I was speaking with James the other day about the severe test that quicksketch is--particularly animal drawing. You can't draw well what you don't understand, and the *tricks* learned from habit quickly fail in the face of moving, unfamilar subjects. Could anything be better for you?
With birds, (this year removed for avian flu precaution!) I found that success lay in getting across their invariably complex, elegant silhouettes and interior shapes. Birds especially test your ability to render shape, form, anatomy, texture, and weight. Needless to say, I didn't find success, but it's a wonderful challenge anyway.
Notice the skinny pigeon!