I use a Garmin 800 GPS device to log my cycling activity. including my commutes. Since I have now built up nearly 4 years of cycling the same route, I had a good dataset to look at how accurate the device is. I wrote some code to import all of the rides tagged with commute in rubiTrack 4 Pro (technical details are below). These tracks needed categorising so that they could be compared.

The following is a guest blog post by David Schindel and colleagues and is a response to the paper by Antonio Marques et al. in Science doi:10.1126/science.341.6152.1341-a.Marques, Maronna and Collins (1) rightly call on the biodiversity research community to include latitude/longitude data in database and published records of natural history specimens.