Quote: It is a federal crime to shoot (including shooting at, but missing) all raptors. Penalties are pretty severe, so unless you have a spare $10K you are looking to pay in fines, along with 6 months to 10 years in prison, it simply is not worth the risk. Put some of that extra $$$$$ into protecting your birds instead.
Technically, it is possible to get a permit that would allow you to trap or shoot a specific bird, but you would have to show that you have gone to great efforts to protect your birds, along with a lack of results, and fairly substantial losses. Pretty hard to meet all that criteria.
I don't believe it is legal to "do in" hawks in Canada either. In fact, I have no intention of SSSing the Coopers Hawk or any of the hawks that show up at my farm, as much as they might frustrate me. (As you can see, I'm FAR more likely to aim a camera at them, than a gun.) The fact is, the Coopers Hawk isn't really a threat to my free-ranging large fowl. He is much more interested in sparrows, finches, junkos, chickadees, etc. The easy stuff. I wouldn't dare let the Silkies free-range unsupervised with him around, however, BUT - when the Coopers Hawk is around, the Red Tails very likely aren't and those guys ARE a threat to my large fowl.