The Osprey may have been the most complex of all the birds. The markings had something to do with that, but also the shapes of the wings. It could make it difficult to get things into camera view. :-)
Time for another color sketch!
These handy guides are fun... I get to paint in two dimensions again!
A helpful comparison to the actual face...
Shaded basecoat... I really beat up some craft brushes here.
Lots of scumbling the paint into crevices!
Then dry it off, and do some more shaded basecoat
And some more...
Finally! Out come the glazes.
As usual, profound difference after those are applied.