Spot-billed Ground Tyrant (Muscisaxicola) [XC225853]
by Diana Carolina Macana from Llanganuco lake area, Ancash, Peru (call)
Spot-billed Ground Tyrant (Muscisaxicola maculirostris) [XC402362]
by Paul Molina Abril from Patio de Brujas, R\u00e1quira, Boyac\u00e1, Colombia (call, song)
Subspecies
Usually considered closely allied with Little Ground-tyrant (Muscisaxicola fluviatilis), but recent phylogenetic work does not suggest so close a relationship.
The following 3 subspecies are recognised:
niceforoi Zimmer, JT, 1947 - Northern part of eastern Andes of Colombia.
rufescens von Berlepsch & Stolzmann, 1896 - Ecuador.
maculirostris d'Orbigny & Lafresnaye, 1837 - Breeds Peru, Bolivia, Chile and western Argentina (Jujuy south to Santa Cruz); southern populations migrate north.