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Re: Oviraptorids as Parrots?

Furthermore, it is hypothesized (Zweers et al) that the most primitive
form of feeding in birds was a so-called 'catch-and-throw' method, in
which a food item is grabbed and thrown into the air to be
subsequently swallowed.

What phylogeny did they assume? One with "transitional shorebirds" at the base of the crown-group?