Study
Experimental evidence for compositional syntax in bird calls
Suzuki, Toshitaka N.; Wheatcroft, David; Griesser, Michael
Nature Communications, 2016
Japanese tits combine an alert call with a recruitment call in a fixed order. Playback presented the two notes in the natural order, in reverse order, and separately, and the birds’ scanning and approach responses were measured.
- Studied in
- Parus minor
- Sample size
- wild Japanese tits tested with playback
Birds scanned and then approached when the notes were played in the natural order, but responded far less when the same notes were reversed. The combination produced a response neither note produced alone.
What it means
The authors' reading, and ours. Where they differ, that difference is the point.
How the authors put it
Japanese tits combine meaning-bearing calls according to a rule in which order matters — compositional syntax in a non-human animal.
How NatureHQ reads it
The most serious candidate anywhere for syntax outside humans, and the reversal control is what makes it worth taking seriously: the same acoustic material in a different order does not work. It is still a very long way from language. Two elements combined by one ordering rule is not an open-ended grammar, and this remains a single system in a single species that other groups have found difficult to extend.
- Two call types and one ordering rule — not an open-ended combinatorial system.
- Attempts to replicate compositional effects in other species have had mixed results.
- Playback in the wild offers limited control over what else the birds can hear.
What this study is used for on NatureHQ
One study can inform several subjects. Here is everywhere this one is cited.
Published by: Nature PortfolioPublished in a Nature Portfolio journal.
This reference was resolved automatically against Crossref and OpenAlex on 2026-08-11.
NatureHQ summarises research in its own words and does not reproduce published text. Reviewed 2026-08-09.