Silverin, Bengt, and John Wingfield. “The Adrenocortical Responses to Stress in Breeding Male Chaffinches Fringilla Coelebs and Bramblings F. Montifringilia in Sweden”. Ornis Svecica 11, no. 4 (October 1, 2001): 223–234. Accessed November 22, 2024. https://journals.lub.lu.se/os/article/view/22848.