Keep Your Fucking Cat Inside
I am stridently anti outdoor cat. If you want your cat to get time outside, build it a catio or train it to walk on a leash. Being outdoors is dangerous to cats, humans, and other animals. Cats are an invasive species that make wonderful pets but should under no circumstances be allowed to wander freely.
Keeping an outdoor cat is neglectful of your cat. Feeding a feral colony without providing veterinary care, spay/neuter, and vaccination is animal abuse.