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♦ 1Ecology of Commanster♦ 2Avian and mammalian predators of shrews in Europe: regional differences, between-year and seasonal variation, and mortality due to predation, Erkki Korpimäki & Kai Norrdahl, Ann. Zool. Fennici 26:389-400. 1989
♦ 3Study of Northern Virginia Ecology♦ 4Liang, H., Li, N., & Chen, Z. (2016).
The prey tactics by two owl species in the forest of northeastern China. Folia Zoologica, 65(3), 208-213.