I am hunting Rio's here in California...
I kinda' half laugh to myself when someone asks what to do when they are henned up... They are henned up from opening day on where I hunt them. So they are either paired up, or losing interest for my season.
I just started getting back into hunting them after a sabbatical, but I have killed just over 20 of them... I have only killed two in the early morning just after they fly off the roost...
Either wait till the hens leave them, or know where they are going and be there. They gobble like crazy at your calling as they walk the other way...
Everyone tells me how easy Rio's are, and I keep thinking those Easterns must be impossible... Now, of course, there are those days when they will come in on a string to two garbage cans being rubbed together, but I think they are challenging enough for me.
Now... The day before or the day after the season, I can get them to land on my head with my calling.