Diet and breeding performance of Ural Owls Strix uralensis under fluctuating food conditions

Korpimäki, E., & Sulkava, S. (1987). Diet and breeding performance of Ural Owls Strix uralensis under fluctuating food conditions. Ornis Fennica, 64(2), 57–66. Noudettu osoitteesta https://ornisfennica.journal.fi/article/view/133235