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Swedish researchers have recreated how birds see the world using a special camera.
The 'birds eye view' reveals just how different a bird's view of the world is.
Colour - Vision - Colours - Birds - Ultraviolet
While human colour vision is based on three primary colours: red, green and blue, birds can also see ultraviolet.
This, the images reveal, allows them to see foliage in stunning detail, for example.
Mess - Humans - Leaves - Birds - Dan-Eric
'What appears to be a green mess to humans are clearly distinguishable leaves for birds,' said Dan-Eric Nilsson, professor at the Department of Biology at Lund University.
'No one knew about this until this study',
Birds - Sides - Leaves - Ultraviolet
For birds, the upper sides of leaves appear much lighter in ultraviolet.
From below, the leaves are very dark.
Way - Structure - Foliage - Birds
In this way the three-dimensional structure of dense foliage is obvious to birds.
This in turn makes it easy for them to move, find food and navigate.
People - Hand - Ultraviolet - Foliage
People, on the other hand, do not perceive ultraviolet, and see the foliage in green;...
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