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
Rouen Saint-Étienne-du-Rouvray. The main opera company in Rouen is the Opéra de Rouen - Normandie. The company performs in the Théâtre des Arts, 7 rue du Docteur Rambert. The company presents opera, classical and other types of music, both vocal and instrumental, as well as dance performances. Every five years, the city hosts the large maritime exposition, L'Armada. Rouen was the birthplace of: Rouen is twinned with: Rouen Cathedral is the subject of a series of paintings by the Impressionist painter Claude Monet, who painted the same scene at different times of the day. Two paintings are in the National Gallery