The whole theory of evilution has been controversial from the beginning, since there has not been one shred of evidence of any creature "evolving" into something else. Creatures naturally adapt to their environment but nothing has "evolved" yet.
The whole theory of evilution has been controversial from the beginning, since there has not been one shred of evidence of any creature "evolving" into something else. Creatures naturally adapt to their environment but nothing has "evolved" yet.Actually, this study may turn out to be very significant, since it demonstrates a very good advantage for a proto-bird to have feathered wings, and also demonstrates how close the wings-as-spoiler functionality morphs into the wings-as-lift functionality:
Also, as the birds start running up steeper inclines, "you can see once they run up vertically, they've attained the wing movement needed for flight," Dial said. Instead of beating their wings horizontally, with flapping directed from head to tail, the wings then shift to going up and down.