Diet of Razorbill Alca torda chicks on Græsholmen, central Baltic Sea

Introduction This paper describes the food of Razorbill Alca torda chicks on Graesholmen in the central Baltic Sea and concludes that sprats Sprattus sprattus form the main diet, although sandeels Ammodytes sp. in some years constitute up to 22% by number. Clupeids, mainly sprats, are the most important food in the Baltic proper (Andersson et al. 1974, this study), whereas sandeels and/or capelin Mallotus villosus form the staple diet in most of...