Guinea Fowl are exceptional at Tick Prevention. While free-ranging they eat Ticks, as well as grasshoppers, bees, plus, they will scare-off or even kill snakes.
In some areas of the country, ticks can be a real problem. No one wants to endure the pain of Rocky Mountain Spotted Tick Fever. Having Guinea Fowl around your property can really make a difference.
Guinea Fowl International Association
Great website with links, articles, weekly chats, plus a really great forum for answering all your Guinea fowl questions. They even have a conference every year.