I was going to post almost the exact same question this evening. I have 10 pullets approaching the 19 week mark. 4 are brahmas, so not expecting anything from them yet, but I have 3 barred rocks and 3 cinnamon queens that I'm anxious to see some productivity from soon. We were allowing them to free range from about 10 am to dusk, but this week decided we are going to keep them in there run until mid evening. They tend to wonder into the neighbors yards while free ranging, and I don't want them leaving eggs where they may not be found. Their run is a 25ft x 50ft enclosure with good grass and forage plus scratch and crumble feed. I just really want the first egg to arrive this month while I'm still working remotely from home so I get to hear that first egg song. I have to go back to working on site at the beginning of August.