If a bird starts flying inside a plane will it remain in the airplane's perspective?

What I mean is, will it fly freely inside a plane or will it get smashed against the backwall because the plane is moving so fast?

Also what if the bird does the same on top of a fast moving ship? Wouldn't it have to suddenly try to keep up with the speed of the ship the moment it takes off?If a bird starts flying inside a plane will it remain in the airplane's perspective?Assuming that the bird starts flying while the airplane is at cruising velocity, then the bird will fly freely (the bird can be thought of as already traveling at the speed of the airplane when in finally decides to take flight within the airplane).



If the bird is perched on top of a moving ship, its velocity (relative to the stationary earth) is equivalent to that of the moving ship. So as it takes off, it can be thought of as already traveling at the same speed as the ship.If a bird starts flying inside a plane will it remain in the airplane's perspective?That's why they tell people to remain seated while the plane is flying, so they don't go flying into the wall at the back of the plane. The flight attendants would have a hell of a time if they weren't using those jet packs to get around.

Come on, think about it.If a bird starts flying inside a plane will it remain in the airplane's perspective?It wont get smashed against the wall lol. You are in a contained space with adjusted pressure.If a bird starts flying inside a plane will it remain in the airplane's perspective?
think of g force when a bird inside