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![The Origin of Flight? How do you go from a pile of bones to a fully articulated creature? Understanding how ligaments affect joint movement can help. Credit Armita Manafzadeh](https://medicine.at.brown.edu/wp-content/uploads/2018/05/ManafzadehPadian_reconstructingROM_1-1-351x185.jpg)
The Origin of Flight?
Pterosaurs probably didn’t fly like bats, according to a new study of bird ligaments and joints.