I love. The softness at the back of the bird. Lost some of the lightest areas and couldn’t lift the highlights, so added a few white gauche lines. Loved the monochromatic challenge. Looking forward to trying the other exercises in this lesson. 
Had some trouble with the eye on the nuthatch, but fixed it somewhat the next day.

tried the cardinal twice. First time paper was too wet. The second try is posted first. I just tried to remember what to do. Not the soft effect I was hoping for, but …