Glossy-black Thrush (Turdus serranus) [XC259196]
by John V. Moore from Napo: 'Caba\u00f1as San Isidro', 1-2 km SW Cosanga, Ecuador (song)
Glossy-black Thrush (Turdus serranus) [XC261051]
by Mitch Lysinger from Napo: 'Caba\u00f1as San Isidro', 1-2 km SW Cosanga, Ecuador (call, calls)
Subspecies
Formerly included Black Thrush (Turdus infuscatus) as a subspecies, but that species rather smaller and with different song and female has distinctive underwing-coverts. Birds from Argentina (Jujuy) described as subspecies unicolor, but that name invalid, as preoccupied, and no replacement proposed. Included in subspecies serranus.
The following 5 subspecies are recognised:
atrosericeus (Lafresnaye, 1848) - North-eastern Colombia and northern Venezuela.