Responsiveness to acoustic stimulation, distribution and habitat preferences of the Grey-headed Woodpecker, Picus canus, and the Three-toed Woodpecker, Picoides tridactylus, in Friuli-Venezia Giulia (North-eastern Italy). (2015). Rivista Italiana Di Ornitologia, 84(1), 41-52. https://doi.org/10.4081/rio.2014.227