I would not call myself a superstitious man, but around here , NE Kansas, there are 4 indian reservations, my wife being a registered Native American, and they believe it is very bad to kill a crow or raven.
Do what you want, but I have enough problems already. I will stick with shooting Coyotes.
Actually as I remember it is illegal to shoot a crow in Nevada, the reasoning is that they are natures garbage collectors.