Blue-backed Parrot (Tanygnathus sumatranus) [XC120920]
by Mike Nelson from Dumoga Bone National Park, Sulawesi, Indonesia (call)
Blue-backed Parrot (Tanygnathus sumatranus) [XC611797]
by Teus Luijendijk from Dumoga Bone National Park, Sulawesi, Indonesia (call)
Subspecies
Proposed subspecies mulleri is synonym of nominate, and indeed species formerly listed as Tanygnathus mulleri. Birds of Banggai have been awarded subspecies incognitus, based on supposedly different iris colour, but data come from unreliable labels. "Tanygnathus heterurus" (Rufous-tailed/Salvadori's Parrot) probably described from an aberrant specimen of present species.