Tilly, the Quads' mom, fortunately only moved them once. We fed her on the porch, and watched every move she made from the windows, door, patio. She knew we were watching despite how hard we tried. She led us all over the yard, across the street, to the neighbor's garage behind us....
Finally, after we gave up for awhile, roomie peeked out again about an hour later and saw where she was returning to the place she had hidden them. Just about 15 feet from our back door, near our wood stack, under a table in just old leaves. We left them for a little while but couldn't bear it. It was rainy and we were afraid they would get wet - or worse another stray animal might get them. We bundled them up and put them back in their nice, dry, comfy cat-house. Tilly came right back to them and never moved them again
I was also afraid if we didn't find them in time to "tame" them, we'd never get to them.
Good luck...just be sneaky.
Diane