Congrats on your new additions! We brought home more chickens last week too

We kept our newbies locked in their house with the old ones for two full days and nights before we let them out. We left their feeders and drinkers inside so they went in and out for drink etc and learned where home is very quickly. We often find the hens sitting in the door way of the house!
We keep food and water in there 24/7. I'd put water in a drinker for them at night. Don't put it right next to their roosts and it shouldn't get too dirty. Either way, I wouldn't leave them without water, I think it's best to let them decide whether they want it or not!
Another reason we leave feed and water in all the time is because the two youngsters stayed inside for more hours of the day.
Best of luck with the

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