However, use of these plugs without a transformer or voltage converter can result in fireworks. The voltage in Europe is twice that of the voltage in the United States, and while many electronics are designed to adapt to voltage changes, it is crucial to check. If the device is not capable of handling 220 volts of electricity, it will fail.
By the time the ducklings are 3-5 weeks old, weather-dependent, they can spend warm, sunny days outside, carefully supervised and protected from predators. Until the ducks are fully feathered around 7-9 weeks old, they have trouble regulating their body temperature and need heat.
Ducklings can go out on grass or range on warm days at a couple of weeks of age, if the lawn is unsprayed and grit is provided with their feed. Ducklings should only be allowed to range on clean ground, preferably where no adult birds have been for 6-12 months to prevent bacterial or parasitic infestations.