Enemar, Anders, and Ola Arheimer. “Egg Sizes of Nine Passerine Bird Species in a Subalpine Birch Forest, Swedish Lapland”. Ornis Svecica 9, no. 1–2 (April 1, 1999): 1–10. Accessed April 26, 2024. https://journals.lub.lu.se/os/article/view/22910.