Blomqvist, Sven, Martin Green, and Åke Lindström. “The Spring Migration of Grey Plover Pluvialis Squatarola in Sweden”. Ornis Svecica 17, no. 3–4 (October 1, 2007): 121–136. Accessed May 11, 2025. https://journals.lub.lu.se/os/article/view/22680.