Our projects vary greatly in both spatial- and temporal-scale and in study species. For example, we used GPS transmitters to map the habitat use of water buffalos in part of the Netherlands. In the Dutch Delta, we investigated the foraging behaviour of terns and cormorants to monitor the effects of the Rotterdam Harbour extension (Maasvlakte II) at the local scale. We have mapped complete migration routes of various species of birds including gulls, terns, waders, birds of prey, herons, geese and swallows. These birds have collected data from locations from all over Europe, far into Africa, Australisian waters and even Antarctica.