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Eastern Double-collared Sunbird Nectarinia mediocris
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This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Taxonomic source(s)
Bowie, R. C. K.; Fjeldså, J.; Hackett, S. J.; Crowe, T. M. 2004. Systematics and biogeography of Double-collared Sunbirds from the Eastern Arc Mountains, Tanzania. The Auk 121(3): 660-681.

Taxonomic note
Nectarinia mediocris (Sibley and Monroe 1990, 1993) has been split into N. mediocris and N. fuelleborni (including ssp. bensoni) following Bowie et al. (2004), but usumbarica is retained as a subspecies of N. mediocris contra Bowie et al. (2004). Morphological evidence in support of this treatment is equivocal but it is supported both phylogenetically and geographically with northern populations of N. m. mediocris and N. m. usumbarica separated from southern populations of N. f. fuelleborni and N. f. bensoni by N. loveridgei and N. moreaui.

Population justification
The global population size has not been quantified, but the species is described as 'common' throughout its range (del Hoyo et al. 2008).

Trend justification
The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Further web sources of information
Explore HBW Alive for further information on this species

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Text account compilers
Calvert, R.

Recommended citation
BirdLife International (2016) Species factsheet: Nectarinia mediocris. Downloaded from on 21/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 21/10/2016.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

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To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Nectariniidae (Sunbirds)
Species name author (Shelley, 1885)
Population size mature individuals
Population trend Stable
Distribution size (breeding/resident) 233,000 km2
Country endemic? No
Links to further information
- Additional Information on this species