Molværsmyr, Sindre, and Anthony Fox. “Using δ2H Stable Isotope Analysis to Identify the Origin of a First Winter Red-Breasted Goose Branta Ruficollis Caught in Norway”. Ornis Norvegica 43 (June 2, 2020): 1-3. Accessed August 11, 2020. https://boap.uib.no/index.php/ornis/article/view/2953.