Densmore, R. V., Ely, C. R., Bollinger, K. S., Kratzer, S., Udevitz, M. S., Febringer, D. J., & Rothe, T. C. (2013). Nesting habitat of the Tule Greater White-fronted Goose Anser albifrons elgasi. Wildfowl, 37–51. Retrieved from https://tidsskrift.dk/Wildfowl/article/view/153979