Pokrovsky , Ivan, Dorothee Ehrich, Rolf A. Ims, Olga Kulikova, Nicolas Lecomte, and Nigel G. Yoccoz. 2012. “Assessing the Causes of Breeding Failure Among the Rough-Legged Buzzard (<em>Buteo lagopus</Em&gt;) During the Nestling Period”. Polar Research 31 (March). https://doi.org/10.3402/polar.v31i0.17294.