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I think that Hummingbirds are amazing creatures and that it is so special when one lands nearby and holds its ground. The Little General is one of those fearless individuals. He vigilently defends his territory from any and all intruders. In my case I was able to set up about 15 feet away from one of his favorite perches. He would busilly buzz off on one of his missions only to return a minute or two later uneffected by my presense. In the animal kingdom there are two principle types of color; pigmented and structural. Irridescent color in a bird feathers is an example of structural color,( or the bending of light like in a prism). When light does not strike the feather properly the color appears black or gray, but when the light strikes just right it is bent and apears irridescent green, magenta, blue, yellow, etc. This image exemplifies the light striking both ways.