Originally Posted by Jeff_O
We'll just let it be your fault this time. Dammit, Tim! grin



are you Jeff the deer biologist of known fame?

Just as human ears can't hear some sounds, human eyes can't see some light. These invisible wavelengths include ultraviolet (beyond violet) and infrared (below red). Deer sense colors toward the violet end of the spectrum, so they can see blues and probably even ultraviolet (UV) light. Deer show a slight sensitivity to yellow, but tests indicate that green, orange, and red appear to them as shades of gray.