I guess I started something now

I love cats and have always had one up until the last couple of years since it’s just not in my budget. So a few months ago I noticed a calico cat in my backyard a couple of times . I bought a can of food for the next time I saw it.
I saw it in my backyard again and set some food out for it. It’s very feral and runs if I go near it.
This time it had two kittens with it- the looked to be several months old, so I am assuming the calico is the mother.
I put a can of food out today when I saw them in my yard and they ran to the fence but watched me put the food out and they took turns eating a few bites.
A few hours later I looked outside and saw 3 more kittens- same colors- a calico a few months old, and then two more kittens much smaller than the first 3.
Apparently it’s a cat running around the neighborhood and obviously not fixed.
It’s fun feeding them occasionally but I can’t feed a whole litter of random kittens every day.
I have started something for sure.