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Black-capped chickadees Poecile atricapillus sing at higher pitches with elevated anthropogenic noise, but not with decreasing canopy cover

Darren S. Proppe, Auteur ; Marc T. Avey, Auteur ; Marisa Hoeschele, Auteur ; Michele K. Moscicki, Auteur ; Tara Farrell, Auteur ; Colleen Cassady St Clair, Auteur ; Christopher B. Sturdy, Auteur

Dans Journal of Avian Biology (43(4) JUL 2012)

Several songbird species sing at higher frequencies (i.e. higher pitch) when anthropogenic noise levels are elevated. Such frequency shifting is thought to be an adaptation to prevent masking of bird song by anthropogenic noise. However, no stud[...]

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