ABSTRACT
We wish to thank SOAFD and NERC for providing support for LP and to Eric Bonsdorff for providing constructive comments.
Atkinson-Willes, G.L. 1976. The numerical distribution of ducks, swans and geese as a guide to assessing the importance of wetlands. Proceedings of the International Conference of Wetlands and Waterfowl, Heilingenhafen, 1974, 199-254.
