Well, I went out this morning and momma cat and her kittens are returned, with said kittens much bigger. And they are all hissier than ever, possibly because it was a dark and stormy night. Unfortunately, it is not the right tmie of year for the Spay N'Go folks to attempt to catch them, so I don't know what I am going to do. The bushes definitely have to go, however. I don;t want my front yard to start harboring a whole colony of ferals.