Video footage of birds in flight

Factual Questions
1

I’m looking for some online resources showing birds in flight - either as a series of frames, or as video clips - does anyone know of such a resource?

2

You can get hours and hours of birds in flight from stock video suppliers, but you’ll have to pay for them.

3

I’d check a p2p network like gnutella. I have a bunch of clips of areospace development at NASA that way.

4

Oh and I’d just like to state they are all to best of my knowledge filmed by NASA and therefor one would hope public domain.

5

Have you seen Winged Migration?

6

I also recommend Winged Migration, it has lots of footage of geese and whooping cranes filmed in flight from ultralights and helicopters.