Adjective: non-avian non'ey-vee-un
- Not pertaining to or characteristic of birds
"In our experimental setup, we attempted to more closely mimic non-avian theropod tail morphology"; "We argue that our experimental approach, although not perfect, was effective in displacing the CoM and recreating locomotor patterns expected in non-avian theropods"; "but the results reported here show that important aspects of non-avian theropod locomotion can be experimentally recreated in modern birds"