Ultimately we have to take personal, karmic responsibility for killing birds with baseballs. The bird, must have committed a cardinal sin in a previous existence.
After my second Borzoi, died at age 15, 20 years ago, I decided she was irreplaceable and decided she would be my last pet, The loss was too big
Now I feed thousands of backyard birds and put out food for feral cats, Racoons, squirrels and possums. A family of hawks are happy I feed their food supply.