In this descriptive study we performed an acoustic comparison of mimetic and non-mimetic song in a highly conspicuous mimic, the Northern Mockingbird Mimus polyglottos. Using automated acoustic software we measured 13 acoustic features from the mimetic and non-mimetic song of 13, free-living, male mockingbirds recorded during the breeding season. We found that when mockingbirds mimic they extend the maximum frequency of their song by over 600 Hz, which increases the frequency bandwidth by 42%. These differences might reflect female preference for the acoustic features present in mimetic song, or they might represent an artefact of which particular acoustic models are imitated by mockingbirds when developing a mimetic repertoire.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 105 • No. 1