Massa, B., Canale, E. D., Lo Verde, G., Congi, G., La Mantia, T., & Ientile, R. (2022). Mediterranean Crossbills <em>Loxia curvirostra</em> sensu lato (Aves, Passeriformes): new data and directions for future research. Rivista Italiana Di Ornitologia, 92(1), 41–60. https://doi.org/10.4081/rio.2022.574