Music and lyrics?: Wknd talks to Julie Elie, the award-winning scientist decoding bird calls
Music and Lyrics: Julie Elie Decodes Zebra Finch Calls
Indiadailyupdate.com – Music and lyrics can mean more than human songs. For scientist Julie Elie, the sounds of zebra finches may reveal how birds communicate meaning through their calls. Her work, recognised with the $100,000 Coller-Dolittle Prize, examines whether these small birds respond only to sounds or also understand the situations those sounds represent.
Elie’s research suggests zebra finches may distinguish the meaning behind a vocalisation, not simply its acoustic pattern. The findings offer a closer look at avian cognition and could help researchers understand how communication develops across the animal world.
Professor Yossi Yovel, a zoologist at Tel Aviv University and chair of the prize’s judging panel, called Elie’s findings “a key moment in the field”.
Listening for meaning in bird calls
Elie works in bioacoustics, the study of sounds made by living creatures and how those sounds are used. Scientists in this field examine which calls animals produce, the circumstances that trigger them and the reactions they prompt in other animals.
Using machine-learning tools, Elie and her colleagues studied zebra finch vocalisations alongside the birds’ behaviour. One significant result was that finches were more likely to confuse calls with related meanings than calls that merely sounded alike.
This pattern indicates that sound alone may not determine how a bird responds. When calls associated with similar situations are more easily mixed up, the birds may be recognising a meaningful category behind the vocal signal.
Elie began studying zebra finches as an undergraduate at Ecole Normale Superieure de Lyon in 2004. From 2010 to 2017, she was a postdoctoral fellow at the Helen Wills Neuroscience Institute, where she focused on neural coding of meaning in birds’ auditory systems.
After joining the Theunissen Lab at the University of California, Berkeley, in December 2024, she continued investigating recurring connections between vocal sounds and behaviour.
“I found a correlation between certain types of sound and certain types of behaviour,” Elie says.
For Elie, these links are an early route to identifying meaning in a call. A zebra finch involved in an aggressive encounter might make an “ah!”-like sound, while a call directed at a partner can resemble “eh!”.
A small repertoire with important messages
Bird calls can carry information about immediate social needs. Zebra finches use vocalisations in situations involving nest defence, mating and food begging. Their communication is not the same as human language, but it can convey structured information connected to relationships and circumstances.
By September last year, Elie and her team had identified 11 principal call types, or vocalisation categories. These included calls associated with hunger, danger and greeting.
Some signals help birds establish each other’s location. One type of call can be used to indicate where another bird is nearby, while another may announce a bird’s presence and await acknowledgement.
Distance calls are useful when zebra finches are flying or foraging where visual contact is limited. A distress call can alert other flock members that help may be needed.
The comparison between music and lyrics is useful here: a call’s sound is only one part of the message. Its meaning may depend on the behaviour, setting and relationship between the birds involved.
Zebra finches are particularly useful for this work because they have been studied extensively for decades. They also adapt relatively well to captivity when they have appropriate conditions and companionship, allowing researchers to observe repeated interactions over time.
“They sit at this nice little level of complexity that makes it interesting,” Elie says.
She contrasts them with animals that produce only two types of calls and with species whose vocal behaviour is far more difficult to classify. Crows, for example, have a diverse range of sounds that may vary according to whether a bird is alone or with others.
FAQ: Understanding zebra finch communication
Do zebra finches have language like humans?
No. The research does not suggest that zebra finches use human-like language. It indicates that their calls may carry meaning related to particular behaviours, needs and social situations.
Why are zebra finches important for sound research?
They have a manageable but varied vocal repertoire, are well studied and can be observed repeatedly in suitable captive environments. These qualities make it easier for scientists to connect calls with behaviour.
What does Music and lyrics have to do with bird calls?
The phrase highlights the distinction between a sound’s acoustic qualities and the information it may communicate. Elie’s work explores whether zebra finches respond to both aspects of a call.