Kosicki, J., T. Sparks, and P. Tryjanowski. “Does Arrival Date Influence Autumn Departure of the White Stork Ciconia Ciconia?”. Ornis Fennica 81, no. 2 (July 1, 2004): 91–95. Accessed November 22, 2024. https://ornisfennica.journal.fi/article/view/133616.