This little hummingbird has posed for photos many times as I go for walks through a nearby field. Most of the final painting is made with ivory black, zinc white, and titanium white, but some carbon black and a little water soluble graphite were also used.
I don’t have a very long range lens, and he’s very small, so to get a closeup photo for a reference I combined an old manual focus Minolta 200mm f4 lens with an old Vivitar 2x teleconverter. The teleconverter really reduces image quality, but for the purpose of a reference photo it worked out.
Too Much White Paper 
You get so much color in tones of grey. Good capture. (K)