One of my RIR girls (now almost 20 weeks) laid her first egg last week but there has been nothing since! They do free range a couple of times a week for a few hours in the evening but only under supervision and I watch closely because my neighbor has a curious cat. Other than that they are almost always in the run. I just really don't think there's a hidden nest. Plus my husband mowed the other day and didn't find anything out in the yard. What the heck gives?! After the first couple of days I kinda just figured her body was still getting used to things, but a week with nothing? I'm starting to think someone played a mean trick on me and that egg was put there to tease me.