Only 1 in 10 plant has the colour blue and far fewer in the animal kingdom, most of them are due to the effect of light on their body and not due to their physical appearance. why is it so rare if flying predator can easily hide themselves?.
I feel like maybe it could partially be because blue is a rather noticeable color. Among browns, blacks, greys, and other dull shades, a blue flower or a blue insect is going to stick out to other creatures.
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