I have attempted to raise guineas multiple times and they always ran off until now so I figured I'd share my experience and hope it helps. I had a broody chicken who I didn't want to hatch eggs so one night I switched out her 5 eggs for 5 guinea chicks and she raised them as her own now they are just over a year and never leave the property though they have recently figured out how to get on the roof


I tend to let my hens raise any chicks I get (just easier for me) but I have a brooder on standby just incase I don't have a hen who will take them or she gives up on the other eggs after a couple hatch. This way when I introduce them to the flock I have a protective momma to watch out for them and run off any bullys. Also not sure but if they are like chickens I always recommend adding new birds at night when everyone is asleep. They just wake up and don't ever question the newcomer lol Hope this helps!