The guinneas have different size wattles also...the males are larger and yes you need more than 1...They roost just like chickens as mine roost with the chickens in the coop and they all get along as they were raised together. Yep the females make the Buck wheat sound and the males make a loud noise...it can get really loud as I have 21 guinneas and love them all and their noise too...they are my stranger alert...they dont like strange things...good luck
Dave I found that my male guineas little red flaps....were more bowl like and bigger than my females....ya know those little red round shaped thingys hanging off the face sides? wish I knew correct name.....hard sometimes when you have more than 2 to keep the noises they make separate !