by flapping their wings up and down and at AN ANGLE they create a "bernoulli" effect.

By creating negative air pressure in front of them and increasing the pressure behind them, naturally the bird can fly.

Its just how an airplane works just at a different angle.

Are people this fucking stupid?

Lemme guess you think helicopters fly because they "push" themselves? LOL

NO the suck themselves forwards.

The use ground effect to hover smoothly but they can hover at almost any altitude below 10,000 feet

Wow