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This study analysed the stomach contents of goosanders and cormorants collected from the Rivers Tweed, Dee, Nith and Spey during 2019 and 2020 in order to to assess whether there was evidence of substantial changes in the diets of these species of fish-eating birds since the 1990s.
Analysis of Bird Stomach Contents: Final Report: Goosander and Cormorant diet on four Scottish rivers (2019-2020)