Munkebye, Eli, Hans Chr. Pedersen, Johan B. Steen, and Henrik Brøseth. 2003. “Predation of Eggs and Incubating Females in Willow Ptarmigan Lagopus L. Lagopus”. Fauna Norvegica 23 (December):1-8. https://doi.org/10.5324/fn.v23i0.5977.