Hafstad, Inge, Bård Gunnar Stokke, Johan Reinert Vikan, Jarkko Rutila, Eivin Røskaft, and Arne Moksnes. “Within-Year Nest Reuse in Open-Nesting, Solitary Breeding Passerines”. Ornis Norvegica 28 (January 1, 2005): 58-61. Accessed August 9, 2020. https://boap.uib.no/index.php/ornis/article/view/190.