The field guide illustrator David Sibley gave instructions for drawing a bird.
Learn to Draw Birds with David Sibley
Sibley Birds West WNPA - National Park Store
How Sketching Birds Changes the Way You See Them - The New York Times
Learn to Draw Birds with David Sibley
Learn to Draw Birds with David Sibley
Learn to Draw Birds with David Sibley
We Helped Scientists Track Birds This Summer. - The New York Times
How to Draw a Bird the David Sibley Way - The New York Times
Feeling Cooped Up? Let Your Mind Fly Free With 'What It's Like To Be A Bird