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Great tits sing low to be loved or high to be heard

August 31, 2011
Leiden, Universiteit
Male great tits of this species try to sound sexy to females by singing complex or high performance songs, but may find their attempts hindered by human-generated noise. Birds have been found to adjust their songs when confronted with urban noise, which seems an effective strategy to deal with masking interference. However, such change may come at a cost of reduced attractiveness.

Great tit.
Credit: Bruno T / Fotolia

Barry White knew it, and male Great Tits know it too: to be successful with the ladies you have to sing as low as possible. But to be heard above city noise, you need to sing high notes. Leiden biologist Wouter Halfwerk studies the role of pitch in communication between city birds.

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The results of his research have been published in PNAS.


Halfwerk and his colleagues from the Behavioural Biology research group at the Institute of Biology in Leiden discovered that male Great Tits sing at much lower pitch when the females of the species are at their most fertile. The male that achieves the lowest notes is most successful with the females. Female Great Tits actually cheat on their mate if he does not manage to sing low enough.

City noise

Male Great Tits, as well as other male birds found in the city, are faced with a dilemma: how can they make sure they are heard above the noise of people and traffic? Results from earlier research suggest that they can achieve this by singing their songs at higher pitch. Measurements taken by the Institute of Biology Leiden show that this is an effective approach for being heard better, but the downside is that females find these songs less impressive. Females have a definite preference for lower notes.

Need to distinguish themselves

The researchers predict that city birds will therefore switch to other acoustic characteristics to distinguish themselves from competing males. The research results show that bird species that rely on low notes to attract partners, suffer most from the effects of city noise. This explains why these species breed less in areas close to mail roads than species that inhabit more peaceful locations.

Story Source:

The above story is based on materials provided by Leiden, Universiteit. Note: Materials may be edited for content and length.

Journal Reference:

  1. W. Halfwerk, S. Bot, J. Buikx, M. van der Velde, J. Komdeur, C. ten Cate, H. Slabbekoorn. Low-frequency songs lose their potency in noisy urban conditions. Proceedings of the National Academy of Sciences, 2011; 108 (35): 14549 DOI: 10.1073/pnas.1109091108

Cite This Page:

Leiden, Universiteit. "Great tits sing low to be loved or high to be heard." ScienceDaily. ScienceDaily, 31 August 2011. <www.sciencedaily.com/releases/2011/08/110831081703.htm>.
Leiden, Universiteit. (2011, August 31). Great tits sing low to be loved or high to be heard. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2011/08/110831081703.htm
Leiden, Universiteit. "Great tits sing low to be loved or high to be heard." ScienceDaily. www.sciencedaily.com/releases/2011/08/110831081703.htm (accessed December 19, 2014).

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