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avian
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The zoo features an impressive collection of avian species from around the world.
Ornithologists study avian behavior and migratory patterns to understand bird species.
Birdwatchers often carry binoculars to observe avian activity in natural habitats.
The avian respiratory system is highly efficient, allowing birds to extract oxygen during both inhalation and exhalation.
Avian anatomy is adapted to flight, with features such as lightweight bones and feathers.
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