UFO hit an airliner full of NBA players recently.

Let's face it. No bird would fly at 30,000 feet and there was no blood or feather on the plane after the collision which was abnormal.  The dent looked weird and the pilots also didn't realize or notice any collision in the air which was weird.

Therefore, what could have hit the airliner at 30,000 feet without leaving any traces behind?

Real footage of bird collision with plane below but at lower altitude:

There's some blood stain on the plane after collision unlike the footage above without blood stain.