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recorded 14 sightings of ivorybills, including two by Hill. From more than
10,000 hours of audio recordings, Mennill and his research assistant Kyle
Swiston have identified more than 300 sounds that match descriptions of
Ivory-billed Woodpeckers.

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They located 20 cavities with entrances within the range recorded for 
Ivory-billed Woodpeckers, but larger than the entrances to the cavities 
typically created by other birds in this area. And they noted numerous dead 
trees on which thick, tightly adhering bark has been scaled cleanly away, 
which fits the description of ivorybill feeding marks.

“Among the promising evidence are recordings of ‘kent’ vocalizations 
apparently being given by two birds in response to one another, and double 
raps recorded in conjunction with vocalizations,” said Jerome A. Jackson, 
Ph.D., a renowned ornithologist and professor of biology at Florida Gulf 
Coast University. “The researchers have presented this evidence with an 
appropriate note of caution, but let’s keep the hope alive that Hill and his 
colleagues may have quietly found an ivorybill Shangri-la along the 
Choctawhatchee,” said Jackson.

The scientists encourage interested parties to listen to the recordings and 
view photographs taken during the expeditions at www.auburn.edu/ivorybill. 
Based on their evidence, Hill and Mennill will expand their search for 
Ivory-billed Woodpeckers in the Choctawhatchee River basin in the winter and 
spring of 2007.

The Hill/Mennill team will present its findings at the North American 
Ornithological Conference in Veracruz, Mexico on Oct. 4, 2006.

“The Ivory-billed Woodpecker, so impressive it was called the Lord God Bird 
in some regions, was thought to be extinct for more than 50 years,” said 
Hill. “Now, there is new hope for scientists, naturalists and birders that 
these birds persist in the panhandle of Florida.”

Auburn University is a preeminent land-grant and comprehensive research 
institution with more than 23,500 students and 6,500 faculty and staff. 
Ranked among the top 50 public universities nationally, Auburn offers more 
than 230 undergraduate, graduate and doctoral degree programs.

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sept06:AU-ivorybill

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