Abstract
Various types of harness have been used to attach satellite transmitters or GPS-dataloggers to several species of geese. The harness designs are such that, after about two years, some weak feature of their construction breaks (e.g. through rust or wear) and the harness will fall off of the bird.
But is this really the case? Sometimes the birds are seen again after the harness has dropped down and everyone thinks: okay, the system works! But has anyone ever seen what really happens? We don’t think so after what we have seen in our birds and we feel it is important to gather information on what has happened. We here present experiences and results of some studies on Greylag Geese from three different projects.