http://arstechnica.com/journals/science.ars/2007/04/04/fractal-flightpaths-how-flies-find-their-way
From the page: The research, from a pair of scientists at Rothamsted Research in the UK and UCLA, have examined and mapped the behavior of fruit flies (drosophila melanogaster) as they search for food. Their findings are interesting; the flies utilize a scale-free flightpath; this is similar to a snowflake, or a coastline, or one of those fractals…