This is my contribution to Cee’s Black and White Photo Challenge: Heads or Facial Features.
One of the first photos that came to mind when I read the prompt was the colourful eyes of a Horse Fly. When I was checking out the Horse Fly portrait in my image library I scrolled past portraits of some Bison and thought the size disparity would make an interesting post.

A selective colour treatment on a portrait of a Horse Fly. Photographed in Hatherton, Cheshire, England.

Selective colour treatment of a prtrait of a bull Bison photographed on a bison ranch near Kelliher, Saskatchewan, Canada.