Engvall, Emma, Jonas Waldenström, and Jonas Hentati-Sundberg. 2023. “Diet and Prey Size Preference in Razorbills Alca Torda Breeding at Stora Karlsö, Sweden”. Ornis Svecica 32 (January). Lund, Sweden:87–98. https://doi.org/10.34080/os.v32.22615.