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
Romanus of Rouen exist - one is a Latin verse version of the 8th century, another is a prose life addressed to the archbishop of Rouen by the doyen of Saint-Médard de Soissons. Those two lives are held in the Bibliothèque municipale de Rouen, whilst another "Life" is held by the Bibliothèque nationale de France in Paris. Romanus of Rouen Saint Romanus of Rouen (; reconstructed Frankish: "*Hruomann"; died 640 AD) was a scribe, clerical sage, and bishop of Rouen. He would have lived under Dagobert I (629–39), though his date of birth is unknown. His life is known in legend and tradition