Olsson, Christer, Jan Pettersson, and Frank Johansson. “Breeding Biology of the Red-Throated Loon Gavia Stellata on the Holmöarna Archipelago, Northern Sweden”. Ornis Svecica 31 (January 26, 2021): 1–18. Accessed January 22, 2022. https://journals.lub.lu.se/os/article/view/22276.