Arzel, C., and J. Elmberg. “Time Use, Foraging Behavior and Microhabitat Use in a Temporary Guild of Spring-Staging Dabbling Ducks”. Ornis Fennica 81, no. 4 (December 31, 2004): 157–168. Accessed May 15, 2024. https://ornisfennica.journal.fi/article/view/133623.