Seznam virov

Blasco-Zumeta J., G.-M. Heinze (2023): Identification Atlas of the Continental Birds of Southwestern Europe. Tundra Ediciones, Castellon.

Cieslak M. (2017): Feathers of European owls: insights into species ecology and identification. Oriolus Förlag, Uppsala.

Demongin L. (2016): Identification Guide to Birds in the Hand. Beauregard-Vendon.

Karell P., K. Ahola, T. Karstinen, J. Valkama, J.E. Brommer (2011): Climate change drives microevolution in a wild bird. Nature Communication 2(1): 208.

Martinez Climent J.A., I. Zuberogoitia Arroyo, R. A. Moreno (2002): Rapaces Nocturnas. Guia para la determinacion de la edad y el sexo en las Estrigiformes ibericas. Monticola Ed., Madrid.

Mikkola H., J. Lamminmäki (2014): Moult, ageing and sexing of Finnish owls. Suomenselän Lintutieteellinen Yhdistyrs ry.

Pietiäinen H., H. Kolunen (1986): Age determination of breeding Ural Owls Strix uralensis. Ornis Fennica 

Vrezec A. (2008): Sove na Slovenskem. Svet ptic 14 (1): 6-13.

Vrezec A. (2008): Določanje sovjih mladičev. Svet ptic 14 (1): 49-51.

Vrezec A. (2009): Melanism and plumage variation in macroura Ural Owl. Dutch Birding 31: 159-170.

Vrezec A. (2012): Črne sove. Gea 22 (april): 54-59.

Vrezec A. (2025): Določanje barvnih oblik in starosti pri lesni sovi. Svet ptic 31 (1): 46-48.