Update 1: It looks like the site was taken down not long after I posted the link above. Here's a tantalizing one-sentence excerpt:
At present, our best tangible evidence for the presence of Ivory-billed Woodpeckers along the Choctawhatchee River is recordings of double knocks and kent calls.Update 2: More tantalizing text from the site:
If we encounter birders in our study area, we will ask them to leave and suggest other areas to search...If birders crowd into one spot, ivorybills will be driven out of that area...Update 3:
Seven observers among the twelve who visited the site for at least 48 hours between May 2005 and April 2006 heard either double knocks or kent calls, and observers detected these signature sounds of ivorybills on 41 separate occasions during this period including as many as 50 kent calls and 45 double knocks during single encounters. Kent calls or double knocks were heard in May and December 2005 and January, February, March, April, May, June, and July 2006.
The site claimed that Brian Rolek had no fewer than 23 sound detections and 10 sightings...It also said that through July 2006, 9 of 13 visitors who spent more than 48 hours at the site detected Ivory-billed Woodpeckers...The "evidence" was collected in a small search area roughly one mile wide and two miles long.
Update 4: Fishcrow meets Hill--see related Birdforum posts here and here.