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Related Experiment Video

Updated: Oct 5, 2025

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

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Published on: August 22, 2018

Syntax errors do not disrupt acoustic communication in the common cuckoo.

Csaba Moskát^1,2, Márk E Hauber³

¹MTA-ELTE-MTM Ecology Research Group, a Joint Research Group of the Hungarian Academy of Sciences, The Biological Institute, Eötvös Loránd University, Pázmány P. st. 1/C, Budapest, 1117, Hungary. moskat@nhmus.hu.

Scientific Reports

|January 29, 2022

Summary

This summary is machine-generated.

Male cuckoos

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Area of Science:

Animal Behavior
Bioacoustics
Ornithology

Background:

Acoustic signal distortion can impede communication effectiveness.
Common cuckoos (Cuculus canorus) possess simple, learned advertisement calls.
Vocal non-learners like cuckoos are expected to have limited vocal production diversity.

Purpose of the Study:

To investigate the impact of syntax errors in male cuckoo advertisement calls.
To determine if call modifications alter signal function in cuckoos.

Main Methods:

Playback experiment using ten call types: seven modified with errors and three natural calls.
Broadcasting calls to male cuckoos to observe responses.
Analysis of acoustic properties like frequency and speed in natural calls.

Main Results:

Male cuckoos responded to signals containing the "cu" element, regardless of form or combination.
The natural 3-note "cu-cu-coo" call exhibits altered acoustic properties (higher frequency, faster speed).
These acoustic changes suggest a novel communicative function for the 3-note call, potentially with females.

Conclusions:

Syntax errors in the "cu" element do not change the fundamental function of the male cuckoo's "cu-coo" call.
The 3-note "cu-cu-coo" call's modified acoustic structure appears to serve a distinct communicative purpose.
Cuckoo vocalizations demonstrate nuanced signaling beyond simple error tolerance.