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.
Ducks can go outside really early. This I put my ducks out around 3 and 4 weeks old at the end of feb/ early march. I usually prep them by shutting their heat lamp off at night around 2 weeks and then not having the heat lamp on at all a few days after that. They adapt to it really quickly.