Here are two more that I thought were exceptionally good. I handed out copies of Birds & Blooms magazine and let the students choose any bird to draw These drawings took roughly 90 minutes each and were done on off-white sketch paper with a variety of drawing pencils.
A friend used her photo software to enhance the backgrounds. Love the outcome.
Click to enlarge. I just adore the faces on these little cheeps. I told the students to make their drawings fit a 4x6 space so that they (or I !) could make greeting cards of them.