Ridgefield residents have signed off on a lease to operate Henny Penny Farm on town-owned land on Ridgebury Road.  A special Town Meeting was held Wednesday night.  Whitney Freeman was approved to have up to 85 sheep graze on the 16-acre farm, designated as conservation land, to aid in soil regeneration.  3 llamas are also allowed.  Some neighbors previously raised concerns to the Conservation Commission about the seemingly commercial nature of the farm and noise from tractors.   A new provision in the lease stipulates that Freeman contact the U.S. Department of Agriculture to suggest changes to her grazing practices if a species of special concern is subject to impact.