We are so glad that you treat your Barn Cats so well!!
But I as watching a news story where it showed many Barn Cats on abandoned farms who are left to fend for themselves and become a nuisance due to disease and the killing of game birds and other animals.
I remember as a lad when my Grandfather died and my Grandmother sold the farm, and the people did not want Barn Cats so they trapped and killed those they could catch.
Your Barn Cats are very lucky indeed.