About Hedydipna metallica (Lichtenstein, 1823)
The Nile Valley sunbird, scientifically named Hedydipna metallica, is a species of bird that belongs to the Nectariniidae family. It can be found in Djibouti, Egypt, Eritrea, Ethiopia, Rwanda, Oman, Saudi Arabia, Somalia, Sudan, Libya, and Yemen. In February, male Nile Valley sunbirds grow into their nuptial plumage, which they display in a flamboyant manner. During winter, both sexes look identical: they are small, measuring only 9 to 10 centimetres in length, with pale grey upper bodies and faded yellow underbodies, and a long, slender, slightly down-curved bill. By February, the male transforms completely, developing glossy green plumage, a bright sulfur-yellow belly, and long tail streamers that add approximately five extra centimetres to his total length. After this transformation, the male will puff up his plumage, parade his new breeding colours, and court his duller-coloured mate. His courtship display includes hovering, paired with body rocking and wing-whirring.
