Update on feral cat

There are two of them.  The big one, possibly part Maine Coon, it is sooo big.  And now a smaller, black cat.  Saw their tracks in the snow and managed to catch both of them eating the cat food I put out.  That's all I can do for them as they are so feral you can't get anywhere near.  Glimpses of them in the backyard from the windows are all I can catch.