I would love nothing more than an awesome UFO video, yet this guy seems to film birds for a living.
If the OP had posted saying, "I saw this amazing thing last night..." The first reply would have been, "If you didn't film it, it didn't
happen!!!!" (because, by that logic, the Battle Of Trafalgar never happened as nobody filmed it!).
So "this guy seems to film birds for a living." Which means he has a camera pointed at the sky a lot? So if he saw something that was unusual he
already had a camera pointing up. If he films birds a lot, and this is a bird, wouldn't he just label it, "Amazing bird footage"?
Okay, so it's a bird. What kind of bird?
Migratory? Nah, probably wouldn't waste all that energy in changing direction. They'd have a long way to go, so acrobatics would be a waste.
Other birds that fly at night.... Where's the location?
Someone mentioned seagulls. Don't think so, unless they are 'speedy' seagulls.
Why the turns and acrobatic direction changes? Maybe chasing prey...
The only prey flying at night would be insects or possibly bats, so a swallow/martin/swift type bird is possible - but they don't use echolocation so
night hunting is probably out. If it's bats, the predator would be a raptor of some kind. They usually have a 'one strike' type hunting method.
They wouldn't waste energy on all that chasing.
Think of a cheetah chasing a gazelle. If they don't catch it within a couple hundred yards, they give up to conserve energy. Same with raptors.
Owls fly at night, but they are usually after ground dwelling prey.
So, if it's a bird as so many have argued. Please provide the species. Show that this kind of flight is very common at night for that species.
I have seen similar type lights making abrupt turns (oh, sorry, no film so I obviously didn't!). I have yet to identify what they are.
Come on, all you bird theorists. What kind of bird?