Byrkjedal, Ingvar, Olaug Flatnes Bratbak, and Terje Lislevand. “Trophic Ecology of Yellow-Billed Loons (Gavia Adamsii) and Common Loons (G. Immer) During the Non-Breeding Season”. Ornis Norvegica 49 (February 24, 2026): 1–12. Accessed February 26, 2026. https://boap.uib.no/index.php/ornis/article/view/4573.