Answer:
Animals use colour communication for several reasons these include; camouflage, mimicry, sexual dimorphism and reproductive behaviour.
Camouflage-chameleons use this technique so they are not hunted as prey
Mimicry-is when an organism has striking colours to warn other organisms they are poisonus. Other animals who are not poisonus have also evoloved to use this technique as a mechanism of defence against predators. The Monarch and Viceroy butterflies use this technique, however the Monarch is poisonus and the Viceroy uses this technique as a defence.
Sexual dimorphism-This enables animals to communicate the difference between sexes. For example; male birds (such as the king parrot) have very bright colours and the females are plain.
Reproductive behaviour-Many birds take on different coulours during the breeding season to attract a parnter. For example the male puffin has bright rings around its beak during the breeding season which fade afterwards.