Distribution of the Grey-headed Woodpecker Picus canus during the Breeding Season in Hokkaido, Japan

Abstract

The Grey-headed Woodpecker Picus canus was censused along 1,071 2-km transects situated in 953 5-km quadrats, in Hokkaido from late April to late July 1976–2014. Based on census results and records from the literature, Grey-headed Woodpeckers were recorded almost throughout Hokkaido, except on the plains and on neighboring islands. They occurred in 27% of quadrats in which censuses or observations were conducted, being observed mainly in mixed and deciduous broad-leaved forests, with occurrence rates (No. of transects of occurrence/No. of transects censused) of 22% and 23%, respectively, and at less than 550 m altitude.