When a grey parrot named Cosmo shouts “Cosmo wanna go up!” and then turns to a housemate and calls them by a completely different name, it is easy to dismiss the whole performance as mimicry. But a peer-reviewed study published in PLOS ONE in 2025 suggests something far more deliberate is happening. Researchers led by Gabriella Smith surveyed the owners of 88 companion parrots spanning 30 species and found that these birds routinely assign specific human-taught names to the people, birds, and even dogs they live with, deploying those names at contextually appropriate moments. The same data, however, revealed that parrots also bend the rules of naming in ways no human speaker would, collapsing labels across species or swapping nicknames between individuals in patterns that challenge basic assumptions about what “using a name” really means.
What the research actually found
Smith and her colleagues, working across the University of Texas at Austin and Hunter College, collected detailed owner reports and then scored every instance of name use against strict operational definitions. For a name to count as “appropriately used,” the bird had to direct it toward the correct individual in a context where the label made sense: greeting a specific person who walked into the room, calling a particular dog during an interaction, or addressing a fellow parrot by its distinct nickname.
Many of the parrots cleared that bar consistently. Owners described birds that would call one caregiver “Mom” and another “Dad” without mixing the two up, or shout a dog’s name as an alert when the bird perceived a threat. The timing and targeting of these calls pointed to something beyond rote repetition. Across the dataset, the birds treated certain sounds as stable identifiers tied to particular social partners.
But the study’s most striking findings involved the ways parrots broke the rules. Some birds used a single label for more than one individual, blurring the one-name-per-person convention that most human cultures take for granted. Others shifted names across species lines, calling a bird by a term originally learned for a human or repurposing one dog’s name for a different dog entirely. The research team did not treat these as errors. Instead, they flagged them as systematic patterns revealing how parrots adapt a human communication tool to their own social logic, where the usefulness of a sound may matter more than strict one-to-one mapping.
Wild parrots already had the building blocks
The companion-parrot findings did not emerge from nowhere. They sit on top of field research showing that wild parrots already possess the cognitive raw materials for name-like behavior.
In 2012, playback experiments with wild orange-fronted conures in Costa Rica demonstrated that individual birds have characteristic contact calls and respond faster and more frequently when they hear a close imitation of their own call than when they hear a generic flock call. That result showed these parrots treat certain sounds as directed specifically at them, functioning as a kind of acoustic address.
Wild green-rumped parrotlets add another layer. Research by Karl Berg and colleagues, published in Proceedings of the Royal Society B, found that nestlings develop unique vocal signatures that are learned from their parents rather than inherited genetically. Adults effectively assign calls to their chicks before the chicks can fly, shaping each young bird’s identifying sound through repeated interaction. Because these vocal tags are socially transmitted, they qualify as cultural products, capable of changing and spreading across generations rather than being locked in by DNA.
Together, these wild studies make it biologically plausible that parrots raised in human homes could co-opt human words as labels for particular individuals. The capacity to learn, store, and deploy individually specific calls is not a quirky artifact of captivity. It is part of what parrots already do.
Parrots are not the only animals that “name” each other
Bottlenose dolphins develop individual signature whistles and copy each other’s whistles to get a specific companion’s attention, a system documented by Stephanie King and Vincent Janik at the University of St Andrews. African elephants appear to go a step further: a 2024 study in Nature Ecology & Evolution by Michael Pardo and colleagues found that elephants produce individually specific name-like calls that are not simple imitations of the receiver’s own voice, suggesting a more arbitrary mapping between sound and identity.
Parrots, at least in domestic settings, do something different from both. They typically borrow labels from a third party, the human caregiver, rather than inventing calls from scratch or copying the target’s own vocalization. The result is three distinct strategies for solving the same social problem: keeping track of many relationships in a complex network. Whether these strategies rely on the same underlying cognitive abilities or represent genuinely different mechanisms remains an open question that will require cross-species experiments using comparable methods.
What the evidence does not yet prove
The clearest gap concerns depth of understanding. Smith’s team emphasized that appropriate name use does not automatically mean a parrot grasps the abstract, symbolic weight a human toddler attaches to the same word. A bird that says “Mommy” when its owner enters the room may have formed a powerful association between that sound and that person without understanding grammar or conceptual reference. From the outside, both behaviors look identical, and behavioral data alone struggle to tell them apart.
There are also methodological limits. The study relied on owner reports rather than continuous audio or video recording for every bird, and it did not test name use under controlled laboratory conditions. Owners are attentive observers, but they may unconsciously notice and remember the instances that confirm their bird “knows” a name while overlooking ambiguous ones. The research team applied strict scoring rules to minimize this bias, but it cannot be fully eliminated in a survey design.
Finally, there is a gap between captive and wild behavior. Field studies confirm that wild parrots possess distinctive vocal signatures and can target specific flock mates by imitating those signatures. What has not been documented in free-living populations is the full analog of what companion parrots do: using stable, arbitrary labels that are not copies of the receiver’s own call and that are shared across many group members. Whether wild parrots ever develop such labels for each other, the way captive parrots do for their human families, remains unknown.
Where parrot naming research goes from here
The current evidence supports a position more interesting than either “parrots just mimic” or “parrots talk like people.” Companion parrots demonstrably deploy specific sounds as stable identifiers for particular individuals and do so at the right moments. They also modify and repurpose those labels according to their own social priorities, sometimes in ways that no human speaker would accept. What researchers still need to pin down is how deeply these birds understand the sounds as symbols and whether anything comparable happens in wild flocks that have never heard a human voice.
Smith’s team has called for long-term audio and video monitoring of companion parrots paired with controlled experiments, an approach that could move the field from compelling description to fully tested science. For now, the next time a parrot calls you by name, the honest scientific answer is that the bird probably does mean you, specifically. It just might also mean the dog.
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*This article was researched with the help of AI, with human editors creating the final content.
