I suppose most of you have heard the expression As the crow flies
meaning the shortest distance. The implication is that crows fly in a straight line, unimpeded by obstacles. However, they don't. You'd think, if you had the entire sky to fly about in, that a straight line would be the wisest path to take, but crows no doubt think of reasons why other ways are preferable.
The word for a group of crows, by the way, is a murder.
Having read the above, reflect on the apothegm You learn something every day.
The link below leads you to ravens and crows in mythology.
now read on.....