This boobook occurs on Mindanao. It has long ear-covert extensions, while breast barring and belly streaks vary among individuals. Researchers recorded long solo songs and shorter duets.
The ear-covert extensions are long and full. Birds described in the paper have a barred breast and dark-edged streaks on the belly, although the belly pattern varies among individuals.
Recordings from Mindanao include long, mellow solo songs and shorter duetted phrases.
An extinction-risk assessment has not been added yet.