public override string ToString()
        {
            StringBuilder report = new StringBuilder();

            GrazingFields.ForEach(gf => report.Append(gf));
            NaturalFields.ForEach(nf => report.Append(nf));
            PlowedFields.ForEach(pf => report.Append(pf));
            ChickenHouses.ForEach(ch => report.Append(ch));
            DuckHouses.ForEach(dh => report.Append(dh));

            return(report.ToString());
        }
 public void AddNaturalField(NaturalField field)
 {
     NaturalFields.Add(field);
 }