[Lazamataz]

One of the problems is that these wings don't have feathers.

Yes, feathers.

Feathers rotate during upwards wing flaps, to make them have little air resistance, and on the down-flap, they lock together to achieve maximum air resistance.

Not even a bird would be able to fly with this guy's design.

[Ol' Dan Tucker]

Feathers rotate during upwards wing flaps, to make them have little air resistance, and on the down-flap, they lock together to achieve maximum air resistance.

Modern R/C ornithopters use sail cloth to simulate the actions you're describing.

[RoosterRedux]

Bats don’t have feathers...yet they fly.