1 How did birds originate?
2 How are birds adapted to flight, and could Archaeopteryx fly?
3 Was Archaeopteryx really the first bird?
4 What do the new Cretaceous birds from China tell us?
5 Did the KT event hit birds hard?
6 What is the fossil and molecular evidence about the origin of modern birds?
6 What are the relationships of the major modern bird groups - and why has it proved so hard to work this out?
7 Did birds eat horses?
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