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Journal of the Acoustical Society of America / Volume 129 / Issue 3 / BIOACOUSTICS [80]

Putative audio recordings of the Ivory-billed Woodpecker (Campephilus principalis)

J. Acoust. Soc. Am. Volume 129, Issue 3, pp. 1626-1630 (2011); (5 pages)

Michael D. Collins

P.O. Box 1975, Pearl River, Louisiana 70452

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Putative audio recordings of the Ivory-billed Woodpecker (Campephilus principalis) are presented along with discussions of the videos from which they were extracted and the observations that were made when these data were obtained. On two occasions, high-pitched calls were heard coming from the direction of a bird that was identified in the field as an Ivory-billed Woodpecker. These calls seem to match the description of an alarm call that was reported in the 1930s. One of the videos captured a series of the high-pitched calls, which sound similar to the Blue Jay (Cyanocitta cristata) bell call but do not match published sonograms of that call. A putative double knock, which is characteristic of the Ivory-billed Woodpecker, was captured in another video a little over a minute before a large bird with characteristics consistent with an Ivory-billed Woodpecker flew into view. Since it is extremely difficult to observe this critically endangered species, information on audio clues could have an impact on its conservation.

© 2011 Acoustical Society of America

ACKNOWLEDGMENTS

The author thanks Bret Tobalske for extracting wingtip curves from the 2008 video; Julie Zickefoose and Bret Tobalske for assessing the videos; Steve Sillett, Jim C. Spickler, and Michael Taylor for donating expertise, time, and equipment to the tree climbing approach that made the 2008 video possible; Amity Bass, Dave Coke, Gretchen Dawson, Susan Epps, Tommy Tuma, and Wayne Higginbotham for assisting with the wingspan and flight speed estimates; and Dalcio Dacol for discovering a clue about the flap style in a Tanner photo.

Article Outline

  1. INTRODUCTION
  2. THE 2006 VIDEO
  3. THE 2008 VIDEO
  4. DISCUSSION

EPAPS

jasa_audio1.mp3 (1966 kB) 21-Mar-2011 15:34

jasa_audio2.mp3 (28 kB) 21-Mar-2011 15:34

jasa_fig_s1.jpg (117 kB) 21-Mar-2011 15:34

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jasa_fig_s5.jpg (298 kB) 21-Mar-2011 15:34

jasa_movie1.mov (4798 kB) 21-Mar-2011 15:34

jasa_movie2.mov (4583 kB) 21-Mar-2011 15:34

jasa_movie3.mov (2004 kB) 21-Mar-2011 15:34

jasa_movie4.mp4 (30636 kB) 21-Mar-2011 15:34

jasa_movie5.mp4 (13724 kB) 21-Mar-2011 15:34

jasa_movie6.mp4 (11367 kB) 21-Mar-2011 15:34

jasa_movie7.mp4 (21515 kB) 21-Mar-2011 15:34

readme.html (9 kB) 21-Mar-2011 15:34

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KEYWORDS and PACS

Keywords

audio acoustics, audio recording, biocommunications

PACS

  • 43.80.Ka

    Sound production by animals: mechanisms, characteristics, populations, biosonar

ARTICLE DATA

History
Received 02 Aug 2010
Accepted 16 Dec 2010
Revised 02 Dec 2010
Published online 09 Mar 2011
Digital Object Identifier
http://dx.doi.org/10.1121/1.3544370

PUBLICATION DATA

ISSN

0001-4966 (print)  

Publisher

$abstract.society.value is a Member of CrossRef Acoustical Society of America

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