So this is a philosophical discussion because I think the photo below is clearly Nature, but it does not qualify for the Nature forum and would be subject to deletion according to their guidelines. That's fine. I am ok with parameters. The birds feeding along the man made levee drainage ditch are not nature? What are they? Where would you have me post this photo? I saw this bird splash down into the water, not prepared to shoot that. I waited to see which direction she would fly after picking her prey out of the water and, fortunately, she flew in my directions. Camera set to birds in flight so I could not do much about the quality of the photo. Perhaps it should have be post processed in B&W.