One of the problems with ticks is that they do not have enough natural predators in the wild. Wild turkeys, mainly the younger ones, eat ticks, but not enough to make a big difference over a large space. However, there are some animals that can help you prevent or get rid of a tick infestation in your yard.
Chickens will eat practically any bug that moves, and ticks are no exceptions. A small number of chickens will easily control the ticks in your yard. Guineas are even better than chickens for tick control because the guineas will roam a bit more and cover a larger area. Also, guineas are less likely to scratch around and damage your lawn and plants. They are also better able to protect themselves from predators than chickens are.