Step 1. We draw the head, a beak and an eye of a pigeon.
Step 2. We draw a body of a pigeon with a tail and a wing.
Step 3. We draw paws at a pigeon.
Step 4. We draw plumage.
Step 5. We paint over a pencil from above the heads are lighter, then is more strongly pressed on a pencil, gradually darkening. Also we paint over plumage at a pigeon, we look at the picture.