Lind, Bo-Bertil, Jimmy Stigh, and Lars Larsson. “Sediment Type and Breeding Strategy of the Bank Swallow Riparia Riparia in Western Sweden”. Ornis Svecica 12, no. 3 (July 1, 2002): 157–163. Accessed November 6, 2024. https://journals.lub.lu.se/os/article/view/22829.