If they roost in the hen house with your lot then nigjt time is the time to catch them.I tried it yesterday. Didn’t work. But I did see both mamas with their two babies in my yard this morning. I tried to catch mama and my two little ones, but they are just too fast to catch
Or maybe they are ground roosting outside with the babies. I am sure you have checked for gaps at the bottom of your fencing so they can’t crawl under.
What I would do is put up some of that black netting on top of your fence so they can’t fly over. Just a couple feet of it added to the top and of they tried to fly over they will bounce off of it. That should keep them contained.