Khaki Campbell ducks seldom hatch out others' young; however, in very communal situations do hatch large broods together. Most brooding behavior has been sacrificed in exchange for prolific egg laying ability in this breed. The ducks, when raised by hand, are not usually defensive of their eggs or nests, making collection of eggs very easy. Mechanical incubators or broody chickens are used to hatch out Khaki Campbell ducklings when ducks are not present in the process. Incubation takes approximately 23 to 28 days for a Khaki Campbell duckling to hatch and eggs need to be inspected for ducklings that have not emerged
History of Rouen Rouen's cathedral and several significant monuments were damaged by Allied bombing. During the German occupation, Nazi Germany's "Kriegsmarine" had its headquarters located in a château on what is now the Rouen Business School (École Supérieure de Commerce de Rouen). The city was liberated by the Canadians on 30 August 1944 after the breakout from Normandy. History of Rouen Rouen, France, was founded by the Gaulish tribe of Veliocasses, who controlled a large area in the lower Seine valley, which today retains a trace of their name as the Vexin. The Gauls named the settlement "Ratumacos" and the Romans called it