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.
My 3 not-so-little ducklings have outgrown their brooder. They're 4 weeks old now. Next week I'll be moving my 4wk and 5wk old chicks out of their brooder and into a make-shift brooder in the chicken coop; I'll be able to move the ducks into the bigger chick brooder, but it will still be too small.