Great tits sing with syntax

Like humans, Japanese great tits use syntax to compose their songs, researchers find.
Toshitaka Suzuki
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Like humans, Japanese great tits use syntax to compose their songs, researchers find.
Toshitaka Suzuki
- More than 2 years ago
Great tits use syntax to compose their tunes.
Japanese great tits (Parus minor) communicate using at least 10 different notes on their own and in combination. Researchers played different calls for Japanese great tits in a forest in Nagano, Japan, to see how the birds responded — an indication of what the call might mean. The birds responded differently to individual notes than they did when played the same note in combination with other notes. And, when researchers reversed the note order, the birds didn’t respond the same way.
By itself, a note means one thing to great tits, but in combination, it means something different, the team argues March 8 in Nature Communications. Similarly, among humans, the order of words in a sentence, its compositional syntax, matters.
Some primates combine calls to convey different messages, but individual notes don’t carry unique meaning in these species. Great tits are the first nonhuman species shown to use compositional syntax, the researchers write.
Listen to recordings from the study:
In this recording, researchers played three types of calls for Japanese great tits: First, a call with three notes — A, B, and C — which signals danger; second, a one-note call (D), which attracts mates; and finally, a combination call, ABC-D, which causes the birds to scan the skies for predators and fly to the source of the sound.
Credit: Toshitaka Suzuki
Researchers played an ABC-D call for great tits, and then reversed an ABC-D call. Birds responded differently in each case.
Credit: Toshitaka Suzuki
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