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Interesting paper on chimpanzee wood knocking
Topic Started: Dec 16 2013, 12:22 PM (218 Views)
Paulw
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Camo Junkie
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I found this while doing some research into what was out there as far as known primate wood knocking. Some of what is described, such as the patterned knocking as well as knocking in concert with vocals, is very close to what those of us in Michigan have experienced(and in many cases, recorded). The pant-hoots done by chimps are a bit different then the calls we typically get in direct association with knocks(we get whoops and screams, but the calls most often directly associated with the knocks are a kind of breathy huff or hiss). Anyway, the overall pattern of activity described really struck a chord with me. http://www.eva.mpg.de/primat/staff/boesch/...drum_chimps.pdf
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Bukwas
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Likes a drafty basement
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My question is how far back in history do wood knocks go being reported in the U.S.?
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Stacy
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Administrator
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Buk, I know Jim looked through all his books several years ago to find the earliest reference he could, and that he'll know it when I ask him, but he's passed out on the couch under the influence of pain meds, muscle relaxers, and anti-inflammatories. I'll try to remember to ask him later tonight though!

Paul, that is very interesting. I particularly like the reference to the "double beat" (or was it double tap?), which we've heard several times. I have a question for you: You know how your spectrogram thingies look different for different species/individuals, etc... could it possibly show the difference between ordinary tree knocking/banging, and chest-beating/hand-clapping, etc., IF that's something our guys do??
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Paulw
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I don't know Stacy, right now most of the impact noises we get, be it tree knocks, gunshots, fireworks, all look largely the same. Once I see something that is out of place(any of the above) I listen to it individually to make a final determination. I DO think some of those light sharp tapping we get could be chest however!
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