My cat was an indoor/outdoor cat when I was in high school and they would swoop at her all the time so when I was walking to my bus stop she would follow close to my legs so they would leave her alone. One day I had enough so after school I took my pellet gun and shot one in the wing. My cat took care of the rest and they left her alone after that. I know they are over protective of their nests. I don't care about that if you are hurting my cat.