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Hummingbirds can identify at least eight colours that are invisible to humans because their eyes are able to

By: Luke Andrews For Mailonline
Date: June 15, 2020
nonspectral colorsRocky Mountain Biological LaboratoryRocky MountainsColorado

Summary

• Humans have three cones in their eyes which can see red, green and blue light • But birds have a fourth - ultraviolet - revealing a new patchwork of colours • Scientists found birds could separate colours that look the same to humans Hummingbirds can spot at least eight colours that are invi

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