These pens are designed to aid both careful observation of ewes and to cement the bond between them and their lambs .
These pens are generally two to eight feet ( 0.6 to 2.4 m ) in length and width .
These pens , which are generally two to eight feet ( 0.6 to 2.4 m ) in length and width , are designed to aid both careful observation of ewes and to cement the bond between them and their lambs .