An announcement from the National Aviary and Project Principalis: The National Aviary, along with Project Principalis, is delighted to announce that we have made available to the public the results to date of our search for the Ivory-billed Woodpecker. A paper titled, “Multiple lines of evidence indicate survival of the Ivory-billed Woodpecker in Louisiana” co-authored […]
I’m reposting an entry from February 2015 with some new commentary as prologue. I recently received a Google alert about a new paper on statistical approaches to extinction relying on sight records. According to the paper, which has not yet been peer reviewed: We have shown that the rate of sightings is the strongest indicator […]
For a slight change of pace, I’m posting this possible double knock in reaction to a calling Barred Owl that Patricia Johnson captured at 8:40 AM on March 29th, within 50 yards of where the calls were recorded on March 11 and 15. I’m posting this particular double knock because the context may give it added […]
I’m still in mourning and adjusting to the loss of my friend. Thanks to all who have expressed appreciation for our work and a desire for it to continue. I’m sure Frank would have felt the same, and with that in mind, this will be the first of two or three installments discussing Pileated Woodpecker […]
I’ve just finished reading Tanner’s dissertation and have gained some new insights into topics that have been discussed in a number of earlier posts. Conventional wisdom, following Tanner, holds that the Ivory-billed Woodpecker’s decline and possible extinction were caused by habitat loss, specifically the logging of old growth forests during the 19th and early 20th […]
1967 slides taken by Neal Wright of a putative Ivory-billed Woodpecker in Texas are viewable on Vireo (search Ivory-billed Woodpecker), but high resolution scans have not been widely circulated as far as I know. These images were not made public until after the the Arkansas “rediscovery”, more than three decades after they were obtained. Wright’s story […]
To expand on some of the data included toward the end of the March trip report (which is worth reading in in conjunction with this post), I thought it would be informative to provide a season by season and sector by sector breakdown of the scaling I and others involved with Project Coyote have found since […]
In late December 2014, I wrote what I’ve described as a speculative post titled, “Is There a Way to Recognize Ivory-billed Woodpecker Excavation? In that post, I relied on Tanner’s Plate 11, a brief description from the monograph: “When Ivory-bills dig, they chisel into the sap and heartwood for borers like other woodpeckers, digging slightly […]
I’m planning to do a few more posts drawing on material I’ve found in Kroch Library’s Rare and Manuscript Collection at Cornell. There may be an intervening post or two on other topics. While Tanner’s monograph is well-known, the reports he wrote for the Audubon Society at the end of each season are not publicly […]
These two photographs, taken by Tanner in 1938 and published in his dissertation, have not been otherwise widely disseminated or (to the best of my knowledge) reprinted elsewhere. Each is interesting in its own right, and not just because they add to the small body of indisputable ivorybill imagery; the first shows the behavior of […]
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