Nice points! I shoot them every chance I get especially crows.....I collect their feet.. 
dont know about the sparrows,but if you just shot crows around here you would get a fine from the dnr.
we have a season,then you can hunt them but they do have a daily limit.
i love calling crows.i live in a pretty good size town,67k people or so.i sit in my back yard with my crow call
let out a few distress calls and in about 5 mins there are so many crows its spooky.
like the hichccok movie "THE BIRDS".scares the heck out of the neighbors when i do it
