#WOODPECKER SOUNDS MANUAL#

RESUMEN esДЄunque ofrecen muchos beneficios mayores a las de la grabaciГіn manual y tГ©cnicas de muestreo al realizar estudios de aves en el campo, los sistemas automatizados de grabaciГіn de sonidos producen una base grande de datos que necesita ser examinada cuidadosamente para localizar los sonidos de interГ©s. Although the automated scanning method offers a fast and economic alternative to traditional manual efforts, our results indicate that manual scanning is best for studies requiring an accurate account of temporal patterns in call frequency and for those involving birds with low vocalization rates. The automated scanning method required less time to process sound recordings, but made more false positive identifications and was less comprehensive than the manual method, identifying significantly fewer target sounds. We collected recordings from the bottomland forests of Florida and the Neotropical dry forests of Costa Rica, and compared manual versus automated cross-correlation scanning techniques. For both methods, we examined the time required to process a 24-h recording, scanning accuracy, and scanning comprehensiveness using four different target sounds of Pileated Woodpeckers ( Dryocopus pileatus), Pale-billed Woodpeckers ( Campephilus guatemalensis), and putative Ivory-billed Woodpeckers ( Campehilus principalis).

We compared two methods for locating target sounds in continuous sound recordings: (1) a manual method using computer software to provide a visual representation of the recording as a sound spectrogram and (2) an automated method using sound analysis software preprogrammed to identify specific target sounds. ABSTRACT Although offering many benefits over manual recording and survey techniques for avian field studies, automated sound recording systems produce large datasets that must be carefully examined to locate sounds of interest.

Woodpecker sounds