Thanks for sharing that.
Of course I don't have photographic evidence, but I will relate two experiences that I myself have witnessed with birds.
Some ten or so years ago, of course with no camera along, my wife, son, and I walked to the far corner of the horse pasture to use a shot-gun to knock bunches of mistletoe from the far reaches of a huge old walnut tree.
I was going to shoot the mistletoe and they were going to watch to see where it fell.
At the crack of the gun, a huge hawk flying overhead was startled and dropped a woodpecker big as a rooster right between us.
Instead of flying away, probably injured by the hawk, the woodpecker ran across the ground and actually ran up the trunk of the walnut tree.
On another occasion last winter (January 2014), I witnessed a squirrel jump on the back of a redwing-blackbird.
That time, I did have my DSLR and actually had been taking pictures of the squirrel's progress along a snow-covered creek-bank.
When the squirrel pounced on the bird, I clicked the shutter, and got a real good picture of the fence-post that was between us, with a portion of the squirrel showing on one side of the post and feathers flying on the other.
The bird managed to escape; I don't know what the squirrel had in mind if he had of caught the bird.