You could try putting out something the roaches will hide under, and then turning that object over so the chickens can grab the roaches during the day. In my coop the cockroaches like to hide in the hole of the concrete block I've got the water fount sitting on. If I pick up the fount during the day the chickens come running, grabbing cockroaches out of their hidey-hole in the concrete block and squabbling over the six-legged treats.
Unfortunately There are lots of things in my backyard for them to hide under... or I figure they hide in the tortoise den.... deep underground.
that's why I can't find them during the day
Anyone want a sulcata tortoise?