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Decibel dataset in this file were analyzed in the publication “Optimizing Detection of the Bobwhite Reproduction Call Using Passive Acoustic Monitoring” https://doi.org/10.7944/P955KPLE

Published by U.S. Fish and Wildlife Service | Department of the Interior | Metadata Last Checked: March 06, 2026 | Last Modified: 2023-01-01T00:00:00Z
Data were analyzed in the publication “Optimizing Detection of the Bobwhite Reproduction Call Using Passive Acoustic Monitoring” authored by Johnson, L. A., M. J. Butler, and S. E. Sesnie We measured sound intensity of the reproduction call of the masked bobwhite in an outdoor wire enclosure measuring 6 m × 18 m. The enclosure contained 12 male and 7 female masked bobwhite. Observers were concealed by vegetation inside the enclosure. We collected sound intensity data using a digital sound level meter (Extech 407736, Extech Instruments Corp., Waltham, MA, USA) over seven days of the breeding season from 19 July to 7 August 2017. We recorded the maximum sound intensity. We used a laser distance meter (Leica DISTO, Leica Geosystems AG, Wetzler, Germany) to determine the distance to the bird. We closely observed the bird's location and noted its orientation in relation to the sound level meter, classifying it as either away, facing, side, or unknown. Using the inverse square law, we have standardized the sound intensity measurements taken at different distances. Based on this, we have predicted the sound intensity of a male masked bobwhite's call at a distance of 10 cm.

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