My point was that dinos may be birds, may be dinos*.
But of course, a rose is a rose is a rose...
and a fly is NOT a butterfly,
still I wonder whether (or not) all dinos were as large
as those of Hollywood-lore.

*recently the learned ones have decreed that mushroms are not vegetables anymore, but just mushroms instead...and a new Kingdom is born, its limits the good old traditional ones: Mineral, Vegetal & Animal.
Which is perfectly OK, naturally. But this does not mean that some vegetables have "evolved": just labels have been changed.