Olofsson, Patrik, Kjell Larsson, Thomas Daleke, Lars-Åke Flodin, Mikael Kristersson, Mikael Larsson, Rolf Larsson, and Gösta Olofsson. 2025. “Population Development of the Sandwich Tern Thalasseus Sandvicensis in Sweden 2007–2023”. Ornis Svecica 35 (February). Lund, Sweden:1-16. https://doi.org/10.34080/os.v35.26043.