Return of Bird of the Week: Black-billed Nightingale-Thrush
A close cousin to last week’s Black-headed Nightingale-Thrush, this is another of the eight Catharus Nightingale-Thrushes. The species has the smallest range of that genus, extending across the highlands of central Costa Rica and into the mountains of western Panama. Within that range it is confined to the higher slopes, from about 1,800 meters up…