When I used to hunt, as a young lad, I was told that ducks will easily do 100 kph. As well, all raptors such as peregrines, gyrfalcons and goshawks, golden and bald eagles, can really book when chasing prey. I personally have seen a hawk, probably a Harris Hawk, dive from on high onto a poor mouse. I always wondered how he could see that tiny mouse from over a hundred feet up and how he could see when in a power dive without goggles.