I saw this yesterday for the first time on our house lot while clearing some fallen branches off the trail, the owl ended up landing in a big pine and the crows kept flying. Why crows chase owls - StarTribune.com
Crows are one of the rare birds that my wife did not like. Too noisy. She also had no love for blue jays after a couple of them attacked her once while she was hanging clothes on the line. No love of turkeys either and I joined her on that one.
Last week at work I watched a crow chasing a bald eagle! I couldn't believe it. This crow was chasing the eagle for a good 30 mins. Each time the eagle would land, the crow would dive bomb him and annoy him enough to fly again. Then the crow would start chasing again.
Seen them go after the hawks around here. Hawks would fly over to a high tower for electric. He would wait till they gave it up. Then continued his hunt.