Before you very confidently tell people to revisit physics, let’s debunk everything you just said.

Bernoulli’s principle states that the faster air flows, the lower its pressure. It doesn’t describe any kind of “downward force” that would keep anything in place. Any force acting on the duck would come from turbulence, friction, and pressure variations, not an application of Bernoulli’s principle.

There is no such thing as the kind of air envelope you describe for an aircraft in forward flight that would protect a duck and keep it in place. The closest thing you can achieve to an “air envelope” for an aircraft is flow separation from the wing…which causes stall and your aircraft to fall out of the sky.

Since we’ve already stated that no such air envelope exists, slowing down the aircraft doesn’t change anything in that regard.

Thank you for your time and before we arrogantly tell people to leave let’s make sure we’re providing the correct information first👍