The style is much like the Label Rouge. It is essentially a portable
shelter that is moved from paddock (fenced in area) to paddock. The idea is to provide ample free range food without leaving the flock in one area long
enough to either over eat, nor over fertilize. It provides a long enough rest period (per paddock) to allow regrowth, and hopefully to break any disease/pest cycles.
The main difference with the Label Rouge system, is that here it can be any breed of
chicken, whereas in France they typically use the
Freedom Ranger which they bred specifically for that program. The Freedom Rangers are not as popular in the US because they do not produce a bird that is very desirable to the US consumer (small breast, big legs) plus they take twice as long to get to maturity (12 weeks) as a Cornish-X. Same system, different bird.
Yes,
chickens do well following cattle. I know people who follow cattle with pigs, then chickens. Good pasture management. Some let the chix on the pasture while the cattle are still there.