I put galvanized wire across the front of the duck pen and thought they were finally contained. Nope! They are all on the lawn today. They squeezed their fat bodies through the white vinyl feve on the other sides of the pen. I especially didn't think the drake child grey through since he is the fastest, but even he is on the lawn today. I read somewhere that rouens were developed in France as "living lawn ornaments." While I don't fully believe that to have been the purpose of the breeding program, they due do live up to the description to a fault.