Skyllberg, Ulf. “Numbers of Taiga Bean Geese Anseer F. Fabalis Utilizing the Western and Central Flyways through Sweden During Springtime 2007–2015”. Ornis Svecica 25, no. 3–4 (October 1, 2015): 153–165. Accessed November 22, 2024. https://journals.lub.lu.se/os/article/view/22542.