I never knew the Peregrine Falcon was so fast until I did some online research. It is a beautiful bird, a rapture that hunts medium sized birds. I have seen very few, and was pleased to see this one at Delta Ponds a while back.

About that speed! Here is a "Cool Fact" from 'All About Birds' http://www.allaboutbirds.org/guide/Peregrine_Falcon/overview):

"The Peregrine Falcon is a very fast flier, averaging 40-55 km/h (25-34 mph) in traveling flight, and reaching speeds up to 112 km/h (69 mph) in direct pursuit of prey. During its spectacular hunting stoop from heights of over 1 km (0.62 mi), the peregrine may reach speeds of 320 km/h (200 mph) as it drops toward its prey."

Now that is fast! I have never seen them dive or go in pursuit of prey, but can imagine that they would be difficult to keep track of at that speed! Impressive! They are built for flying and not by chance!