earth floor flooring garden ground losa marble piso rock stone tile tiles walk animal bill bird colours duck ducks feather feathers mallard spring winter forest fungi fungus greenish group Hypholoma fascicular Kuehneromyces mutabi mushrooms September yellow background clay construction Dirt Mud relief surface texture track tracks tread dry farmland field hard loam plowed Rolling Hills Soil trees Tuscany autumn duct fall lay leaf leaves path rest road trail