Wahl, J., Svenning, J.-C., Stipniece, A., Nilsson, L., Molina, B., Lorentsen, S.-H., Lehikoinen, A., Langendoen, T., Keller, V., Hornman, M., Holt, C. A., Devos, K., Deceuninck, B., Clausen, P., Crowe, O., Balsby, T. J. S., Nagy, S., Christensen, T., Dalby, L., & Fox, A. D. (2016). Seeking explanations for recent changes in abundance of wintering Eurasian Wigeon (Anas penelope) in northwest Europe. Ornis Fennica, 93(1), 12–25. https://doi.org/10.51812/of.133884