The bower bird is a very interesting animal, it makes art for non-practical reasons. It creates lavish tents and other nest like sculptures that are for the soul purpose of attracting a mate.
Hump back whales are a huge mystery of the ocean. They sing and have songs that scientist first thought were to attract mates but they aren't. They sing for pleasure as it doesn't effect any of the female whales. The males come together and sing and evolve their songs over time. Birds don't do that, birds compete with each other in order to out do each other and they don't come together to improve on their songs.
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