Summary #1162

Wild Hummingbirds can see colors that humans can’t
  • Seeing more colors gives hummingbirds an advantage when looking for food, mating, and avoiding predators.
  • Human eyes have three color-perceiving cones - red, green, blue, whereas hummingbirds have four cones.
  • The fourth cone multiplies the color-combinations these birds can recognize.
  • To discover this, scientists used a simple reward-based test to see if birds see a difference when spectral colors are enhanced with UV light.


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