Kathy, -saw the same "muster" of crows circling around Manning freeway and the 137 Avenue overpass on our grocery run at 11:30 Am today; later saw all those grackles in our backyard and clean forgot about the crows! Gotta be old age! HA!

"WikiAnswers", has a neat summary of corvid lore: -"A group of crows is called a flock, muster or storytelling of crows. The most widely used term is "murder." This is based on the (fallacious) folk tale that crows form tribunals to judge and punish the bad behavior of a member of the flock. If the verdict goes against the defendant, that bird is killed (murdered) by the flock. The basis in fact is probably that occasionally crows will kill a dying crow who doesn't belong in their territory or much more commonly feed on carcasses of dead crows. Also, both crows and ravens are associated with battlefields, medieval hospitals, execution sites and cemeteries (because they scavenged on human remains). In England, a tombstone is sometimes called a ravenstone."