Its diving speed during flight is more than 300 km (186 miles) per hour, making it not only the world’s fastest bird but also the world’s fastest animal.
To be faaaair, the cheetah reaches 100+ km/h on it's own merits, the dumb falcon just falls really fast
If you drop a whale from space it will probably beat that speed record while falling, the falcon doesn't get extra credit just because he can get up there and survive without help
I had a pretty cool encounter with one about 6-7 years ago, I was on a driving holiday and we were cruising throught the Ikara-Flinders Ranges National Park doing about 90-100km and one of these guys just casually comes up to my window, so close I could have grabbed it. It must have picked some drag effect off the van like a wake in the air or something and it was just gliding next to us with the occasional flap for a good 5 minutes until there was an incoming car and it ducked out