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Biol Lett. 2012 April 23; 8(2): 320.
Published online 2012 January 11. doi:  10.1098/rsbl.2011.1225
PMCID: PMC3297410

Experimental evidence for real-time song frequency shift in response to urban noise in a passerine bird

Biol. Lett.7, 36–38 (23 February 2011; Published online 7 July 2010) (doi:10.1098/rsbl.2010.0437)

When we published, we neglected to mention this article is part of Eira Bermúdez Cuamatzin's thesis to obtain the PhD degree in the ‘Programa de Doctorado en Ciencias Biomédicas’ at the Universidad Nacional Autónoma de México (UNAM). We are grateful to the Instituto de Ecología at UNAM.

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