Grey-backed Tachuri Polystictus superciliaris is listed as Near Threatened under criterion B1a+b(i,ii,iii,v) on the basis that it was thought to have a small and decreasing range within which it occurred at only a few locations.
The species is still suspected to be in decline owing to habitat degradation; however, the updated range map suggests that its Extent of Occurrence is much larger than previously thought, and is now been estimated at 314,000 km2. This no longer approaches the threshold for Vulnerable under the B1 criterion and suggests that the species is eligible for downlisting to Least Concern.
Updated BirdLife range map for Grey-backed Tachuri
Comments on this proposed category change are invited and up-to-date information is requested on the species’s likely population size, rate of decline over 11 years (estimate of three generations) and the severity of threats.