Oh man, just had that yesterday right outside my office window.
Mean ol' Mr. Crow started to walk his a$$ up into the tree where Mr. and Mrs. Mockingbird had their nest. Dax, being extremely smart knew exactly what was up. So Dax, being a friend of lovely voiced birds everywhere walked out his office and walked over to the tree where Mr. Crow flew off only to be met with an onslaught of dive bombs from the Mockingbirds, various Blackbirds, even the swallows engaged.
That'll teach ol' Mr. Crow I tell ya.
Other Avian events that have happened on or just right outside my office window:
A Falcon slammed into my office window chasing a blackbird, the Falcon got up dazed, got things righted and then flew off, the blackbrid, dead as a doornail . . . other birds were not happy with the Falcon.
An Osprey flew by carrying a mouse, all of sudden a Bald Eagle swoops in at the Osprey forcing the Osprey to drop the mouse, the Bald Eagle pirouettes, dove and snatched the mouse out of the air and flew off.