I've had the reference photo of this eagle for a number of years but never got around to drawing it.
The darker sections of this drawing proved a challenge. Early on I'd decided to cover the whole area black, and then erase the feathers. The other option would have been to leave the feathers white, which would have been a bit too fiddly.
I'm really happy with the contrast in this picture - carbon works so well to get those 'black blacks'.
The one thing I'm not too happy with is the background. I'm not too sure how to get a smoother grey with carbon - as opposed to being quite grainy.