They were mostly north of here pre white man days, however, the Indians were known to kill them, in quantity... using the PETA logic you mentioned, then, I guess we should be allowed to as well... no?
An outbreak of distemper would do the trick. Something similar wiped out the grey seal population in the North Sea (UK) many years ago. This is the same virus that is fatal to dogs and spreads like wildfire.
Now, if we could just train a couple of those coyotes on Monomy .....