Unmasking Zorro: functional importance of the facial mask in the Masked Shrike (Lanius nubicus).Published in:Behavioral Ecology, 2012, v. 23, n. 3, p. 615, doi. 10.1093/beheco/ars005By:Yosef, Reuven;Zduniak, Piotr;Tryjanowski, PiotrPublication type:Article