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The brilliant, metallic blue of the morpho butterfly
(Morpho peleides)
is known as a "physical" colour. This is created not by pigmentation
but as a consequence of the physical structure of the wing surface
layers, which only reflect blue light. |
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There are several different forms of the poisonous eyelash viper
Bothrops schlegelii in Central America, each differing only in
colour.
This colour dictates where the snake will lie and wait for its prey
of small lizards and birds. The brown, grey and green forms are well
camouflaged among leaves and branches, whereas yellow individuals
can be more commonly found close to brightly coloured heliconias. |
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