Published in HBW Volume 13 on page 240 (above).
Original HBW caption:
The island of Socotra, situated off the north-east coast of Somalia, holds several endemic bird species and thus forms an Endemic Bird Area. The endemic forms include the Socotra Sunbird, seen here perching on Trichocalyx obovatus (Acanthaceae), a plant classed as Data-deficient. This restricted-range nectariniid is relatively common, with a population of around 11,000 pairs occurring at a density of 6–12 birds/km2. It is present pretty well wherever there is vegetation. Although it is not currently considered to be globally threatened, it could in the future face a considerable threat from the results of overgrazing by goats and cattle.