This folder contains the data used in: Brzeziński et al. The expansion wave of an invasive predator leaves declining waterbird populations behind. Diversity and Distributions, DOI: 10.1111/ddi.13003 The xlsx file contains information on 3,693 averaged waterbirds abundance estimations from 123 waterbodies in Poland. Waterbody.name - local name of a waterbody Waterbody.ID - identity number Waterbody.type - category of waterbody Year - year of bird abundance estimation. Averaged if abundance was provided for the time range. Species - bird species Abundance - averaged abundance (number of pairs) estimation Time.since.mink - years elapsed since a given waterbody was colonized by mink, as predicted by models presented in Brzeziński et al. 2019, Biological Invasions.