Are bird species that vocalize at higher frequencies preadapted to inhabit noisy urban areas ? /

Eitemau Tebyg

• Serins respond to anthropogenic noise by increasing vocal activity /
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• Habitat-dependent acoustic divergence affects playback response in urban and forest populations of the European blackbird /
  gan: Ripmeester, Erwin A. P.
• The influence of the acoustic community on songs of birds in a neotropical rain forest /
  gan: Luther, David.
• Birds' egges: The visual guide to the eggs of over 500 bird species from around the world
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  Cyhoeddwyd: (1994)
• The great book of birds: The comprehensive illustrated guide to 600 species and their environments
  Cyhoeddwyd: (1997)