I have been corresponding with Christopher Carlisle, a Mississippi birder who has recently started searching for ivorybills in the Pascagoula watershed. These exchanges, along with a post on IBWO.net about the Choctawhatchee, led me to start thinking, in a somewhat more methodical fashion, about habitat conditions and how the ivorybill might have survived and to […]
A couple have people have written to say they’re having difficulty hearing the calls on the raw clips from March 2, 2013. I’m posting an amplified version of the morning first clip. The clarinet toots and rustling will be quite loud, but the calls are definitely much easier to hear. In addition to the calls […]
Note: Based on thousands of hours of reviewing and analyzing field recordings, I now think these sounds are squirrel vocalizations. In my experience, Eastern grey squirrels are the most challenging confusion species, both in the field and on sonograms. Modest attenuation by distance can make them sound quite ivorybill like, and fundamental frequencies can sometimes […]
In late 2011, I visited the Museum of Natural History at Harvard and took some iPhone photos of the Ivory-billed Woodpecker nest that’s on display there. In reviewing the pictures of cavities I took last week in Louisiana, I was struck by the similarity in appearance, especially between the Harvard cavity and the cavity in […]
For those who missed them, I thought I’d repost these images from 2010. The bark chip is from the old Project Coyote search area.
Late last June, I collected several beetles and larvae from a suspected feeding tree in our search area. An entomologist has identified one of the adult specimens as Hesperandra (or Parandra) polita. All the adults were the same species, and we presume that the larvae were as well, although we were not able to preserve […]
I returned to the Project Coyote search area from January 4-11 and was joined by Frank Wiley for all but one day, Steve Pagans (a retired forester, birder, and Project Coyote team member) for two days, and several ornithologists/field biologists between January 7-11. Some of our guests had intriguing auditory encounters, several of which involved […]
Last week I linked to this image and pointed out that the caption described it as the “Third ivorybills’ nest”. That discovery sent me back to the online archives. What I found raises some interesting questions about the Singer Tract, the population density of ivorybills, at least around John’s Bayou in 1935, and about habitat quality […]
In searching Cornell University’s online digital archives, I ran across some IBWO related photographs from the 1935 Allen/Kellogg/Tanner expedition in the Albert Rich Brand collection. Many of these pictures are familiar and have been widely published. Others are likely to be new, even to the most obsessive researchers, since Brand was a relatively less celebrated […]
There may be some value in considering the distribution of the particular type of suspected Ivory-billed Woodpecker foraging sign that I’ve discussed in my recent posts. For the purposes of this analysis, I will limit myself to one very narrow category of bark scaling: extensive work done on the boles of live or recently dead […]
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