Coop, not coup. And yes! Mine are all trained to go into the coop at night, but you have to be willing to be more "hands on" with it. I put feed and/or treats in the coops about 20 minutes before sundown, using a call to let the ones far off in the fields know it's time to come up. Then I use herding sticks to guide everyone into the coops before locking up. Herding is more difficult some nights than it is on others - it all depends on the whims of the guineas and whether the bossier birds are chasing the others out. And sometimes I can skip a night or be a little late and all the guineas will have put themselves up, but I do not like having to do this as some birds are liable to wind up in trees rather than in the coops. If the guineas get wind of the fact roosting in trees is an option that's where they'll go, and I'd have to start the training process all over again by somehow getting them back in the coops for 24/7 lockdown for a couple weeks or so. Not fun, so I make sure I'm always out there treating and herding at the right time, just in case. You say yours are in a run, though? So you wouldn't have the same challenges getting them back into the coops, I'd imagine.
So short answer: yes, but unless you're guiding or luring them in and locking them in there to be let out in the morning, it's never going to be a sure thing the way it is with chickens.
