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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Recent content by Louis Bevier

  1. L

    Ivory-billed Woodpecker (formerly updates)

    Dave, the bird averaged those flap rates over about the first 1.6s and appeared to maintain its wing beat rate for the remainder until it banked at about 3s mark. It averaged, not maintained (if that's where you are going), 7.5 over the first 12 cycles. The averages for the three periods you...
  2. L

    Ivory-billed Woodpecker (formerly updates)

    WARNING: incoming boredons!! As far as the Ivory-bill's status in Indiana goes, I think it remains uncertain based on historical accounts. It may have occurred in precolonial times if one assumes the native American archaeological sites with skeletal material from southern Ohio reflect natural...
  3. L

    Ivory-billed Woodpecker (formerly updates)

    Thanks, Fred. The key phrase written on my website regarding wing beat rate for the Ivory-billed Woodpecker is this: "we really don’t know." Is there any verifiable measurement of wing beat frequency for Ivory-billed? Did Tanner or anyone else actually measure the air speed of an Ivory-billed...
  4. L

    Ivory-billed Woodpecker (formerly updates)

    "We?" Is there a multiple personality involved? I'm sure this is not meant at face value and has the implicit meaning that I'm seeing the image as not an Ivory-billed because I want that outcome. Like other comments on reputations, ignorance, shout-outs from soggy bottoms, and the like, your...
  5. L

    Ivory-billed Woodpecker (formerly updates)

    Yep, that Pileated in the Luneau video was frightened and flushed from low over water. It's rapid wing beat and direct flight is not unexpected. It looked basically like other Pileateds that I have spooked. Ken Rosenberg first identified the bird in the Luneau video as a Wood Duck, and I...
  6. L

    Ivory-billed Woodpecker (formerly updates)

    I suspect Ivory-bills engaged in flap-bound flight just like most woodpeckers. Even the as yet unpublished film of a female Imperial Woodpecker shows this. The flight and wing patterns are utterly unlike the bird in the Luneau video. MMinNY: nothing is beneath my reputation; you mischaracterize...
  7. L

    Ivory-billed Woodpecker (formerly updates)

    Tanner's photos of two Ivory-bills in flight I briefly looked at the Fishcrow web page this morning and noticed that he compares his 29 March 2008 images to some photographs of Ivory-bills in flight taken by James Tanner. Collins says that this "evidence" has been overlooked looked for years...
  8. L

    Ivory-billed Woodpecker (formerly updates)

    Regarding Bret Tobalske, I want to make it clear that my criticism was directed at the misuse of his data by those grasping for any way to confirm their belief that an ambiguous and inconclusive video image shows an Ivory-billed Woodpecker. I think Bret Tobalske's work is of the highest caliber...
  9. L

    Ivory-billed Woodpecker (formerly updates)

    The physical measurement is pertinent because one is measuring a blurred image on a monitor, whether in pixels or millimeters. It is possible to get good images of birds from 70' feet away; I've seen lots of them. In fact, I think most people who try get identifiable images at that distance. The...
  10. L

    Ivory-billed Woodpecker (formerly updates)

    I agree. I need to lighten up. We do need David Lynch to direct the definitive film on this story. I might have some time to look into Dr. Collins's video clips next week. First, I need to look back over the vague images of what appear to a rhomboid flipper taken by submersible in Loch Ness...
  11. L

    Ivory-billed Woodpecker (formerly updates)

    The data for flight speed cited are from table 7 in Tobalske's 1996 Auk paper. The sample size: n = 1 (this could be combined data for both male and female at one nest; because Tobalske did not distinguish the sexes, he averaged all flights for a location nest--see footnotes and methods). The...
  12. L

    Ivory-billed Woodpecker (formerly updates)

    a lot of crow There does seem to be a lot of crow here and not much else. I hope Mike Collins has offered his original field notes and raw video for archive and independent examination. If so, this will all get sorted out. I can see that by comparing what he originally posted as video of this...
  13. L

    Ivory-billed Woodpecker (formerly updates)

    Re: Michael Collins Now see, Terry, you've left yourself open to criticism that you missed the important points by not staying for the Q&A! I was "Collinsed" on 5-14-08. The journal entry for that day shows how, in a manner similar to creationists recently cropping up in the school district...
  14. L

    Ivory-billed Woodpecker (formerly updates)

    Stepping into this parallel universe for a moment, something appropriate to an alternate reality such as this will air on television tonight. Bobby Harrison's blurry, fly-by split-second video clip captured September 2004 may be shown during an episode of "This American Life" (snickering across...
  15. L

    Ivory-billed Woodpecker (formerly updates)

    in the words of a fishcrow When I first started bird watching in 1996...
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