Grazing of commoners ' ponies and cattle is an essential part of the management of the forest , helping to maintain the internationally important heathland , bog , grassland and wood-pasture habitats and their associated wildlife . Recently this ancient practice has come under pressure as the rising house prices in the area have stopped local commoning families from moving into new homes which have the rights attached .
Grazing of commoners ' ponies and cattle is an essential part of the management of the Forest , helping to keep the heathland , bog , grassland and wood-pasture habitats and their wildlife in good shape.This ancient practice came under pressure as the rising house prices in the area stopped local commoning families from moving into new homes which have the rights attached which meant the next generation could not become commoners until their parents passed on the house and rights .