* Rolando, A. (1993). A Study on the Hybridization between Carrion and Hooded Crow in Northwestern Italy. Ornis Scandinavica (Scandinavian Journal of Ornithology), 24(1), 80–83. https://doi.org/10.2307/3676414 | * Rolando, A. (1993). A Study on the Hybridization between Carrion and Hooded Crow in Northwestern Italy. Ornis Scandinavica (Scandinavian Journal of Ornithology), 24(1), 80–83. https://doi.org/10.2307/3676414 |