Starlings and English or House sparrows, and domestic pigeons are generally unprotected most places. Grackles used to be unprotected in PA, but I don't know about now. Bluejays were unprotected in PA as well at one time, but fall under the crow treaty now, as well as probably the general ban on killing songbirds.
At the time I got my first couple of non-res PA licenses, there was actually a bounty on Great Horned owls. Not so much nowadays!
