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How many bones are there in a bird's body? Why do flightless birds have wings? Class aves – the biology classroom
All about bird anatomy
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Why do flightless birds such as ostrich and emu have wings? - My Q/A Corner
How Many Bones are There in a Bird's Body?
Bird Bone Cross Section / 2
Characteristics of Birds | Biology for Majors II
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Class Aves – The Biology Classroom
All About Bird Anatomy | Bird Academy • The Cornell Lab