Lötberg, Ulrik, Natalie Isaksson, Lennart Söderlund, and Susanne Åkesson. 2022. “Conservation Measures for the Caspian Tern Hydroprogne Caspia at the Largest Colony in Sweden”. Ornis Svecica 32 (June). Lund, Sweden:26–37. https://doi.org/10.34080/os.v32.22569.