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Urban noise influences vocalization structure in the H ouse W ren T roglodytes aedon
Author(s) -
Redondo Priscilla,
Barrantes Gilbert,
Sandoval Luis
Publication year - 2013
Publication title -
ibis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.933
H-Index - 80
eISSN - 1474-919X
pISSN - 0019-1019
DOI - 10.1111/ibi.12053
Subject(s) - troglodytes , noise (video) , geography , bandwidth (computing) , communication , ecology , biology , telecommunications , computer science , psychology , artificial intelligence , image (mathematics)
Urban habitats are noisy and constrain acoustic communication in birds. We analysed the effect of anthropogenic noise on the vocalization characteristics of H ouse W rens T roglodytes aedon at two sites with different noise levels (rural and urban). We measured in each song and song trill the frequency bandwidth, maximum amplitude, highest and minimum frequency, and trill rate. In noisy urban environments, there was a reduction in bandwidth and an increase in trill rate relative to quieter, rural environments. The whole song of birds from both populations increased in minimum frequency as noise increased, improving song transmission.