I’m sure there are actual official names for the sounds that this raven is making, but I don’t know them, so I’m going to go with “cackling.”
He was probably 40-50 feet overhead and just sounding off in all of his glory. Of course, so were the wind, the lawnmowers (tomorrow is trash day, so most of the gardeners are out in front of it), the motorcycles, the planes overhead…
I think you can still hear him, sounds a lot like some exotic percussion instrument from South America, clacking and clicking his staccato clattering. (Although the compression that YouTube uses might have wiped out some of the finer audio details.) In particular, at about the 16-20 second marks it comes through, and again just before the end at about 0:26.
I hope you can hear him!