1. They're excited. Parakeets are naturally curious and playful birds, and they may be simply excited about something in their environment. This could be anything from a new toy to a change in the weather.
2. They're hungry or thirsty. Parakeets need to eat and drink regularly, so if they're feeling hungry or thirsty, they may become restless and hyperactive. Make sure they have plenty of food and water available.
3. They're not getting enough sleep. Parakeets need around 10-12 hours of sleep per day, so if they're not getting enough sleep, they may become irritable and hyperactive. Make sure they have a quiet place to sleep where they won't be disturbed.
4. They're sick. If your parakeets are acting hyper and they also have other symptoms, such as diarrhea, vomiting, or a decreased appetite, they may be sick. Take them to the vet as soon as possible.
If you're not sure what's causing your parakeets to be hyper, it's best to take them to the vet to rule out any medical problems.