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The vocal repertoire of Blue Jays (Cyanocitta cristata): Spectrographic snapshots and suggested nomenclature

Wilson Journal of Ornithology, ISSN: 1559-4491, Vol: 134, Issue: 2, Page: 309-317
2022
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Article Description

Blue Jays (Cyanocitta cristata) are known to have large vocal repertoires, although no peer-reviewed study had thoroughly overviewed what vocalizations comprise such repertoires. Using 7,153 vocalizations, most of them recorded in central Kentucky, I document 36 Blue Jay vocalization types, provide spectrographs of 31 of them, and present their relative frequency of use. I suggest a hierarchical nomenclature that can be used to classify Blue Jay vocalizations and that can also be used to classify the vocalizations of other corvids. My depiction of the vocalizations of Blue Jays, and suggestion for a generalizable approach to nomenclature establishment, could help advance our knowledge of the functions of Blue Jay vocalizations and of the evolutionary history of them, especially in relation to the New World jay group.

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