Hi Kittycate2! It's hard to know if a cat is feral or stray. Stray cats that have been on their own for some time act like ferals, but generally they come to trust people again more quickly than would a feral cat.
Here are some links that explain the differences between ferals and strays.
Happy browsing! ...and thank you for rescuing this kitty! Does he still live outside, or is he a pet now? And I hate to be nosey... but have you had him neutered?What Are Feral Cats? Â© 2000-2003 Metro Animal Resource Services, Inc.
Explains the difference between feral cats, stray cats and alley cats.â€œA â€œFeralâ€ Cat? What Kind of Cat is That?â€
Article by www.furr-angels.com.â€By Feral, do you mean wild?â€
An article by Jeri Dopp of www.safehavenforcats.com
with a description of how feral colonies get started (and how we can help prevent them!)What is a feral cat or dog?
A feral animal â€œhas lived his entire life outside, fending for himself, fighting tooth and claw for food and survival.â€ From the Feral Colonies forum of The Cat Site, a discussion of feral cats.