Technically lots of Robins. Pencil and watercolour, 2 x 5 minutes (bottom), and 2 x 15 minutes (top).
Pencil, watercolour & ink. 20 minute pose.
I decided halfway through that I wasn’t going to ink details on the body; just the outline and the background.
I got lucky with this pose, from where I was sitting.
Pencil (HB and 6B) and watercolour. 40 minute pose.