Hello, Blackie dear, how beautiful you are! My kitty Macy goes outside on a 50' leash and is able to occasionally catch birds. So, I agree with Liz, you cats are just clearing out the slowest and dimmest birds. However, please be careful of avian flu. It sounds like you are considering becoming an indoor cat, sneaking inside the house! Blackie, you are a great COTD and I wish you many more years of health, happiness, and love with your loving family.