Maybe this is no big deal, or maybe it could actually damage the credibility of the BFRO's sightings database.
Can a sketch created by a witness be considered a part of their testimony?
If so, I believe the BFRO has now demonstrated that they are willing to alter the testimony which a witness has provided to them, if or when that testimony becomes inconvenient.
For any scientific organization, tampering with or manufacturing data is a serious charge. If the organization's primary source of data is witness testimony, the willingness to tamper with that testimony is troubling.
I know I tend to be long-winded, but I hope you'll read and consider this.
The reason I feel it's important is simple. If the BFRO has shown the willingness to alter a witness-provided picture, it is hard to argue that they would be unwilling to alter witness-provided words.
(In the following I will refer to the BFRO as an organization. I am not accusing any individual of responsibility.)
The picture in question had been discussed here briefly in the past. It had been posted on a blog where they joked that it looked like bigfoot was "flipping the bird." It was a witness-drawn sketch, far from detailed, but it could be interpreted that way. I really thought it was kind of funny, and so I saved the link.
Recently, I wanted to have that picture to email to a friend for some reason (I've since forgotten). So I grabbed the image from the blog, but it was kind of small. In wanting to see the full size version, I clicked the blog-provided link to the original BFRO report with which the picture was included.
But the picture currently on the BFRO, and the picture posted on the blog didn't match.
Strange...
The hand, which had been somewhat open to interpretation, or misinterpretation - thus the comedy of it - now just looked like a hand.
The blog version was flipping the blob.
The BFRO version was clearly a hand.
Here are the images:
From the blog-

From the BFRO report-

One of them had obviously been modified.
Was the image on the blog an unaltered capture of the original image from the BFRO site, or was it captured and then altered?
Or was the current image on the BFRO site adjusted after the blog captured and posted the image?
Let's consider motivations:
A blogger, if responsible, would be digging up a vague picture, thinking up a very subtle joke, and then sublty manufacturing the joke by making the picture more vague. If you're gonna make bigfoot flip someone off, why not make it clear, right? Why would the blogger care about such a trifle? It just doesn't make a lot of sense to me.
The BFRO, if responsible, would be taking a vague picture that someone had made fun of, and then altering it so that it was more clearly just a hand, not a gesture. They would be clarifying the intent. Clearing things up. Adjusting perceptions. Making sure it wasn't misinterpreted and laughed off. They would be protecting the image of their credibility. This would make sense, except that the image is presented with the words "The witness John provided the following drawing."
And by trying to preserve the appearance of seriousness, real credibility would go out the window.
So who was the tinkerer- The Blog or The BFRO?
I decided to see if the images showed any clues of tampering.
For the following process I used the bitmap format to preserve resolution. For posting purposes, however, they have been converted to jpegs.
In all of these examples, the image from the "Blog version" is on the left, and the current "BFRO version" is on the right.
I began by matching the images as closely as I could.

The Blog version has lost some degree of resolution due to the fact that it was reduced in size when posted on its site. (If that makes sense.)
After matching the images I enlarged them significantly, looking for details that would indicate modification. Even when quite large, the differences in the hand are obvious, but not much else is.

To look for details not obviously noticable, I then, using IrfanView, greatly decreased contrast and gamma correction. Below are the images further enlarged and enhanced in this way.

I believe this revealed some artifacts of alteration. I will highlight the most interesting of these below.

-Here you can see in the lower circle that there is an unusual gap in the shaded edge between the body and the arm.
In the higher circle you can see a gap that cleanly separates where the hand and shoulder were previously in contact, leaving a flat edge on the base of thumb and a remnant "bump" of shading on the shoulder.

-Notice here that there is a floating bit of shading, as if part, but not all was erased.

-The artifact highlighted here is the most conclusive to me. There is the trace of a line just beyond the end of the finger in the current BFRO version which perfectly matches the the edge of the fingertip in the blog version.
This line would seem to require one of two conclusions:
1) The BFRO version is the original, but it included a nearly invisible guide line which happened indicate a nice point where a fingertip could end if someone would ever wish to modify it.
..or..
2) The Blog version is the original, and the BFRO version was modified after the fact, leaving a trace line where the fingertip originally was.
I'm led to conclude that the BFRO altered the original sketch which was provided by the witness.
I would appreciate any other opinions, any other analyses, and any comments on whether or not this really matters.
These tests (if that's the right word) should be repeatable by others using the original images. I hope some of you may to do so in order to verify that I haven't made some kind of mistake due to my methodology.
I would like to know if anyone else can support, verify, disprove, or uncover anything about this. Take out your magnifying glasses and let me know your opinion on these images.
Background info:
Report is listed as being submitted by witness on August 28, 2005.
Blog post is from September 13, 2005.
Tech people: would it be visible in the HTML code if the BFRO image was updated AFTER the date on the blog post?
-
My point in all of this, once again:
If a witness draws a funny-looking sketch, it does not hurt the credibility of a group that is honestly reporting what the witness has said and provided. If the group alters that sketch, however, and yet represents it as the being the original, they are falsifying information in a witness report. If that group's key contribution is in the collection and presentation of witness reports, then their demonstrated willingness to falsify information in those reports must, I think, impact their credibility.
If it was the BFRO rather than the blogger which altered the image, does it taint their entire database? If they will tamper with visual evidence provided by a witness because it looks funny, could they not tamper with testimonial evidence provided by a witness because it sounds funny?
I realize this is dangerous. I know the BFRO database is a valuable tool, and I hate that this may bring its worth into question.
Only if the evidence and opinion of others seems to confirm and support the idea that something is amiss do I believe we would want to address this to the BFRO. And in such a case it wouldn't be a matter for them of merely changing the picture back to the original or adding a footnote, it would be a matter of public redaction and explanation, and a defense of the rest of the evidence.
If this actually happened, if this picture was altered by the organization because it looked silly, it's a really stupid thing to risk your crediblity over.
I, for one, really appreciate the BFRO for its website and for presenting to the public a face of rationality. I'll personally be upset if I feel I can no longer have confidence in the honesty of their witness reports.