Bird or droid? Starlings nail R2-D2 beeps and boops.
In a fascinating exploration of avian vocal mimicry, researchers from the University of Amsterdam and Leiden University have revealed that some songbirds, particularly starlings, are surprisingly adept at imitating the iconic sounds of R2-D2 from the *Star Wars* franchise. Published in *Scientific Reports*, the study analyzed 115 videos submitted to the citizen science initiative, The Bird Singalong Project, focusing on how different species of parrots and European starlings replicate R2-D2’s signature beeps and boops. While parrots are often the first birds that come to mind when discussing vocal mimicry, the findings suggest that starlings outperform them in this particular task due to their unique vocal anatomy, which allows them to produce multiple tones simultaneously.
The research highlights a significant difference in vocal organ structure between the two groups of birds. While parrots, including larger species like African greys and Amazon parrots, can only produce single-tone sounds due to their vocal organ design, starlings possess a dual sound source that enables them to mimic more complex, multi-tonal sounds akin to those made by R2-D2. Interestingly, the study found that smaller parrot species, such as budgerigars and cockatiels, were able to imitate simpler R2-D2 sounds more accurately than their larger counterparts, despite the common belief that larger brain size correlates with better mimicry. This challenges the notion that intelligence, as measured by brain size, is the sole determinant of vocal imitation ability in birds.
The implications of this research extend beyond mere entertainment; they offer insights into the cognitive abilities of songbirds and their vocal learning processes. Recent studies have drawn parallels between the brain regions responsible for vocalization in parakeets and those that govern speech in humans, suggesting that these birds may possess a complex understanding of sound production. As bird owners continue to share their attempts to teach their pets to mimic R2-D2, this research underscores the remarkable capabilities of these feathered friends, revealing that in the quest for mimicry, sometimes smaller brains can lead to greater vocal prowess. The study not only enriches our understanding of avian communication but also highlights the intricate relationship between anatomy, behavior, and cognitive ability in the animal kingdom.
Songbirds
like
parrots
and parakeets might be well known for squeaking out
embarrassing one-liners
and
certain four-letter words
, but those arenât the only sounds they can mimic. Birds have been observed copying
dog barks
,
car alarms
, and even
chainsaws
. Thereâs also no shortage of online videos showing particularly adept birds imitating possibly the worldâs most famous robot: R2-D2. But it turns out some species are better equipped to copy the
Star Wars
droidâs
high-pitched beeps and boops than others. The findings are detailed in a
paper recently published in
Scientific Reports
Â
Researchers from the University of Amsterdam and Leiden University in The Netherlands analyzed a trove of volunteer submitted videos showing various songbirds attempting to imitate the R2-D2âs signature sounds. They specifically compared the results among nine different parrot and European starling species.Â
While most people might immediately associate parrots with vocal mimicry, the starlings in the study actually performed much better, thanks to a uniquely shaped vocal organ that allows them to produce two tones simultaneously. Interestingly, larger brain size, whether in parrots or starlings, also didnât appear to translate into better mimicry ability.
When it comes to copying R2-D2, the best bet seems to be
small birds with small brains
.Â
CREDIT: Birdsingalong Project.
Training birds to beep, whistle, and bloopÂ
A subset of eccentric bird owners have been trying to
teach their feathered friends to reenact
Star Wars
scenes
for years.
YouTube
and Instagram are full of clips showing starlings and parrots attempting to mimic the droidâs robotic sounds, albeit with varying degrees of success. There are even a handful of videos,
some with over one million views
, created specifically to help train birds to perfect the impression.
For their experiment, the researchers analyzed a total of 115 videos submitted to the citizen science website The
Bird Singalong Project
. The study analyzed examples where different bird species successfully mimicked both monophonic (single-tone) and multiphonic (multiple-tone) sounds. Â
CREDIT: Carli Jeffrey.
For context, R2-D2âs âvoiceâ in the
Star Wars
films was created by sound designer Ben Burtt, using a âring modulatorâ on an ARP 2600 modular synthesizer. The modulator combines multiple audio input signals and merges them to create a multitonal output. The result: the chaotic crescendos of sound that R2-D2 makes when itâs startled or stressed. R2-D2, in other words, can produce both monophonic and multiphonic sounds.Â
As far as the birds are concerned, differences in their anatomy determined which types of robot sounds they could imitate. None of the parrot species analyzed were able to replicate the droidâs multiphonic sounds. Like humans, parrots have a vocal organ shaped in a way that allows them to produce only one tone at a time. By contrast, starlings have vocal organs with two sound sources, giving them the physical ability to mimic R2-D2âs more complex, multi-tonal sounds.
The bird research summarized in an infographic.
Image: Nick Dam (Leiden University), Henkjan Honing (university of Amsterdam) & Michelle Spierings (Leiden University)
While the parrots werenât able to fully replicate R2-D2âs vocabulary, they could imitate some of the robotâs simpler, single-toned beeps and boops. Even then though, some parrots fared better than others. Overall, the study found that smaller parrot species, like budgerigars and cockatiels, mimicked the droidâs simple sounds more accurately than larger species like African greys and Amazon parrots.
âIn our study we found that parrots with larger brains, and also relatively large shell nuclei, imitated monophonic sounds significantly less accurately than budgerigars and cockatiels that have smaller shell regions and larger core regions,â
the researchers wrote
. âParrots with smaller brains, however, have a smaller repertoire of imitated sounds.â
Related: [
We finally know how parrots âtalkâ
]
When it comes to speech âbird brainâ isnât an insultÂ
Recent studies have shed new light on how songbirds are able to learn phrases and copy sounds with such high levels of accuracy. One study
published earlier this year in
Nature
,
analyzed the brain regions of parakeets while they were vocalizing, and found
surprising similarities to the neural regions that controls speech in humans
.Â
Other research shows that parrots and macaws even possess the capability to
communicate with each other remotely over video calls
. Some of these birds can amass vocabularies that rival that of many toddlers. Puck, a pet budgerigar that died in 1994,
reportedly learned a shocking 1,728 words
.Â
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Bird or droid? Starlings nail R2-D2 beeps and boops.
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