Why birds sing at dawn: the role of consistent song transmission

By Timothy J. Brown, P. Handford. 2002

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Fitness costs as well as benefits are important when considering responses to anthropogenic noise (2014, background): “…because sound transmits further and more reliably at dawn than at other times of the day, due to lower wind noise and fewer atmospheric fluctuations (e.g., Brown and Handford 2003), birds that shift their singing away from the dawn chorus may suffer by communicating to a more localized audience.”
Wind-induced noise alters signaler and receiver behavior in vibrational communication (2010, background): “For example, diel variation in wind velocity may favor signaling during morning or evening lulls, as with species using acoustic communication (Andersson et al. 1998; Brown and Handford 2003).”