Hello sir.
After that Cardinal photo you posted, I was researching a buff nickel close up with it's micro images.
One hot spot, lets call it, presented its self in a raw view. To confirm what was in view, here come the filters. (you know me)
As the filters x-rayed this hot spot, meaning exposing the shadows of the strike, I thought, hmm. ?
Only one thing to do next.
Lets see how the shadows handle color to define , "A Cardinal" and its shadows or markings.