calling is your best bet. i hunt coyote VERY often and more times than none while using a rabbit distress call, i will notice crows storming me looking for a potential meal. of course camo is critical here too. I'd say invest on a cheap ghillie suit like i did. absolute best camo you could get and you can find them real cheap already made online for under $100. just make sure if you get one, it's the entire suit. some sites sell just the pants or just the jacket. make sure it's the entire ghillie suit. also some sites will sell ghillie KITS to make one yourself. make sure you're not buying that either unless you want to make your own. pygmy is right tho. i'm positive ravens are illegal to hunt in any state, but crows are legal in many states. however they are not nongame animal, so you have to check your states regulations and make sure they're in season and you're not shooting over your limit. also, i'm not sure if you're allowed to rifle hunt birds, but i could be wrong.. good luck!