The sunbird breeds in southern South Africa (and where Sibuya Game Reserve is situated). It is mainly resident, but partly migratory in the northeast of its range. It is common in gardens, fynbos, forest edges and coastal scrub.
The sunbird is usually seen singly or in pairs. Its flight is fast and direct on short wings. The sunbird breeds all year round, with a peak from July to November. The closed oval nest is constructed from grass, lichen and other plant material, bound together with spider webs. It has a side entrance which sometimes has a porch, and is lined with feathers.
It lives mainly on nectar from flowers, but takes some fruit, and, especially when feeding young, insects and spiders. It has the habit of hovering in front of webs to extract spiders. It can hover like a hummingbird to take nectar, but usually perches to do so. The Greater Double-Collared Sunbird makes a shrill whistle and click: Wrew wrew wrew ch ch