Transmitters are programmed to record a location every 15 minutes. In order to reduce the amount of data we’re uploading to the website, we condense each swan’s GPS points to a single trajectory of locations.
In the map below, if you hover over each point the ID of the swan will be shown. The button under the +/- zoom button in the upper left corner gives the option of other base layers. You can also zoom into a specific region by holding down the shift key and selecting the area you want to view.