I am trying find a way to manage my pasture for chickens. I want a patch work of short and tall forages. Short forages will have greatest chicken traffic while tall forages will be refuge / source of insect prey. Preference is to have about half of landscape in each type with complete connectivity of short grass areas meaning the tall grass patches will be fenced off. The fencing will allow chickens through. I was considering use of sheep and goats but latter in particular is prone to parasite problems and will be hard to contain near some of my valued shrub and tree plantings. Would cotton geese be suitable to maintain short grass areas? I am concerned geese may promote parasite problems in chickens which are of primary interest.