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Ivory-billed Woodpecker | Southeast Region
https://www.fws.gov/ivorybill/audio.html
Audio -- Hear the only known recording of the Ivory-billed Woodpeckers captured in 1935 on the Singer Tract, Louisiana (today part of the Tensas National Wildlife Refuge). Recorded by Arthur A. Allen and Peter Paul Kellogg ©2004 Cornell Lab of Ornithology
Ivory-billed Woodpecker Sounds, All About Birds, Cornell ...
https://www.allaboutbirds.org/guide/Ivory-billed_Woodpecker/sounds
The largest of the woodpeckers north of Mexico and the third largest in the world, the Ivory-billed Woodpecker was a bird of old-growth forests in the southeastern U.S. and Cuba. Destruction of its forest habitat caused severe population declines in the 1800s, and only very small numbers survived into the twentieth century. It was thought to have gone extinct in the middle of the …
Sounds: Is that an Ivory-billed Woodpecker? - National …
https://www.aviary.org/conservation/project-principalis/natural-history/sounds/
Presumed Ivory-billed Woodpecker calls recorded by an Audio Moth, February 18, 2020. These calls are somewhat distant and are often obscured by the squirrels and the Red-shouldered Hawk. Sonogram from one of the March 2017 recordings (below), showing a harmonic structure similar to the Singer Tract kents.
Putative audio recordings of the Ivory-billed Woodpecker ...
http://www.fishcrow.com/JASAv129p1626.pdf
as an Ivory-billed Woodpecker, track the movements of the bird for 10 min, and then obtain video footage of a large woodpecker that has several characteristics consistent with an Ivory-billed Woodpecker. This footage supports the hypoth-esis that the high-pitched calls were made by an Ivory-billed FIG. 1.
Evidence of ivory-billed woodpecker's existence mounts ...
https://news.cornell.edu/stories/2005/08/evidence-ivory-bill-existence-mounts-audio
Experts at the lab could then check spectograms (audio signatures on a graph) and listen to promising sounds. Expert reviewers to date have identified 54 of the double-knocks from ARUs that may have been made by an ivory-billed woodpecker because they occurred at appropriate times and places for an ivory-bill.
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