Plant populations in wetland areas face increasing isolation as wetlands are globally under threat from habitat loss and fragmentation. Erik Kleyheeg and Merel Soons of Utrecht University show that the daily movement behaviour of wintering mallards is highly predictable from the landscape they live in and that their daily flights contribute to maintaining the connections between wetland plant populations across increasingly fragmented landscapes. The researchers and co-authors are publishing their results today in the academic journal Journal of Ecology.