Pets, while adorable, can also be incredibly annoying at times. And parakeets are at the top of the annoying-adorable lists of all time. These birds are highly intelligent, can mimic human speech, and can cause mischief for entertainment. At least, the last one applies to the OP’s pet parakeet who enjoyed making life worse for them.
For fun, the parakeet would snatch batteries out of any and all devices at home. This includes beard trimmers and fire alarms, two things that normally require a bit of effort to add and remove batteries from. After the OP would locate the batteries, the parakeet would laugh and dance.