Fox, Anthony D., Henning Heldbjerg, Kevin K. Clausen, Ole R. Therkildsen, Qingshan Zhao, Juan J. Negro, and Andy J. Green. “Danish Greylag Goose Anser Anser Use of the Coto Doñana Sand Dunes for Gritting”. Wildfowl 73 (November 14, 2025): 26–42. Accessed April 15, 2026. https://tidsskrift.dk/Wildfowl/article/view/156395.