When we finally get out to our new house I plan on getting some guineas. With four dogs I really worry about ticks and with 5 acres (4 of them being field) I want to find a natural solution to keeping the blood sucker population down. I've heard guineas are fairly low maintence and love to eat pests. My question is how many to start with? Also will they go back to a home base (coop) at night like chickens? Will they stay close to home as I would like to let them free range?