Webinar: It’s tough to be heard in the city: Adaptations of bird song in
urban environments

Presenter: Dr. David Luther, George Mason University

Registration link:


Start: February 22, 2016 @ 1 PM ET

End: February 22, 2016 @ 2 PM ET

Modern, high-density urban environments are an evolutionarily recent
habitat in which urban features such as uniform grey cement surroundings,
tall buildings with reflective surfaces, and loud low frequency ambient
noise pose a variety of novel selection pressures to animals that live in
this environment. The ambient noise environment can affect the perception
of acoustic mating signals and mask signal content. Because acoustic
communication is a critical component of both male-male competition and
female mate choice in many taxa including anurans, crickets, and birds, the
effects of urban ambient noise on signal transmission might have
significant consequences for mate choice and resource defense across a
diversity of taxa. A plethora of studies have found that birds and
amphibians in urban environments produce vocalizations with higher minimum
frequencies compared to the vocalizations of more rural populations. This
study investigates the songs and behaviors of white-crowned sparrows in and
around San Francisco to better understand the mechanisms and consequences
of song evolution in an urban environment.


Cayugabirds-L List Info:

1) http://www.mail-archive.com/cayugabirds-l@cornell.edu/maillist.html
2) http://www.surfbirds.com/birdingmail/Group/Cayugabirds
3) http://birdingonthe.net/mailinglists/CAYU.html

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