Ranazzi, Lamberto, Alberto Manganaro, and Luca Salvati. 2002. “Density Fluctuations in an Urban Population of Tawny Owl Strix Aluco: A Long-Term Study in Rome, Italy”. Ornis Svecica 12 (1–2). Lund, Sweden:63-67. https://doi.org/10.34080/os.v12.22837.