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Re: Sinocalliopteryx (Theropoda: Compsognathidae) ate confuciusornithids and dromaeosaurids



At least a cuculiform taxon also presents that undulating type of
flight: the South American Guira guira.

2012/9/2 David Marjanovic <david.marjanovic@gmx.at>:
>>> Sparrows are interesting in  another way: they practice undulating
>
>>> flight. [...]