Post by ioannakarageorge on Jul 18, 2016 11:46:59 GMT -4
You can distinguish between the arrival and departure crawl by looking for the direction that the sand is pushed in while the turtle was crawling (A and D in the figure). Also, examining the tracks and their relationship to the high tide line (E) can help determine the arrival crawl. Once determined, follow the arrival crawl up to the area where the sand is disturbed.
In the disturbed sand area (B and C in the figure), there may be two “body pits” or differentiated areas of digging. The primary body pit is the larger of the two (C) and usually the turtle makes this just before digging the nest chamber. The smaller chamber (B) is made after nesting, when the turtle covers and camouflages the site. False crawls with disturbed sand usually will not have a well-defined secondary body pit.
Check this link out to look at some examples of false crawls:False Crawl ID
This site shows common false crawls made by loggerhead sea turtles. Although we are not working with loggerheads, this is a great depiction of false crawls you might see out in the field. Unfortunately, what you see in the field is never as simple as these depictions, especially when dealing with hawksbills. Hawksbills make it more difficult to assess the outcome of a crawl by nesting in vegetation. Leaf litter, roots, and forest floor do not make as nice of a slate as sand does.