Parakeets in the wild live in flocks numbering thousands. They use a variety of sounds and vocalizations to stay in contact with one another and warn one another of danger. Parakeets kept as pets are likewise vocal, using a variety of chirps to communicate. They are happiest in groups, or at least in pairs.
When parakeets are relaxed and happy, they warble. It sounds a bit like they are chattering softly to themselves. Parakeets will warble happily when they are falling asleep, preening themselves or listening to music.
When a parakeet emits a high-pitched yelp, it is because he is distressed or feels threatened. He might also be seeking attention, either because he feels ignored and is communicating his abandonment issues or because he wants to make sure you have not gotten lost. In the wild, parakeets yelp in this manner when looking for a parakeet they assume has become lost. The lost parakeet can follow the yelp and get back home.
When a parakeet feels happy and safe in his cage, he might whistle. Although parakeets tend to whistle most during sunrise and sunset, they are known to do so at any time of day. If you play music for your parakeet, he may try to whistle along with it if he’s enjoying it.
Excitement and Anger
When a parakeet becomes excited, he will cry out, “Ack! Ack! Ack!” It is a cheerful cry. The parakeet will often bob his head up and down to show his pleasure. But be sure: Don't confuse the happy cry with “Ark! Ark! Ark!” -- a cry that expresses anger. For example, a parakeet will cry in anger if another parakeet in his cage is trying to pull out his tail feathers or annoying him in a certain way.
Parakeets are sharp cookies; if they are exposed to certain sounds often enough, you may find them mimicking them. Some parakeets learn to mimic ringing mobile phones, human laughter and even traffic sounds from outside if you keep them near a window.
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