Occupancy and abundance of Little Owl Athene noctua in an intensively manage forest area in Biscay
2006. Zabala, J., Zuberogoitia, I., Martínez-Climent, J.A., Martínez, J.E., Azkona, A., Hidalgo, S. & Iraeta, A. 2006. Occupancy and abundance of Little Owl Athene noctua in an intensively manage forest area in Biscay. Ornis Fennica 83: 97-107