Feral cats are not socialized and won't make eye contact, and strays could be abandoned or lost but may make eye contact.
Kittens in a box
It can be very dangerous for a litter of kittens to be on their own, unless their mom is out for a couple hours with the intent to return.
If you find kittens in a box, someone most likely dumped them there. If the kittens are found behind a bush, it's best to closely monitor them, and see if the mother returns.
"Every kitten needs to be fed every three hours at the max," Brown said. "Mom must return every three hours to feed her babies. Like clockwork, her body tells her to do so. If momma doesn't return within that time frame something is wrong, and humans must intervene. She could be dead, injured or trapped."
There's also the chance she abandoned them.
The safest place for kittens is with their mothers. "If you don't see the mom, there's a couple different ways to tell if mom is around," said Christiano. If the kittens are clean and quiet, the mother is most likely coming back. However, if they are dirty and crying, the mother may not return. At that point, Christiano recommends taking them.