The grey-capped social weaver or grey-headed social weaver (Pseudonigrita arnaudi) is a small and sparrow-like with a pale grey crown. The species arnaudi is named in honour of Joseph-Pons d'Arnaud, the French explorer who collected a specimen around 1841 near Juba on the White Nile, and sent it to the French Museum of Natural History. It builds roofed nests made of straws, and breeds in colonies in thorny Acacia trees throughout Ethiopia, Kenya, Somalia, South Sudan, Sudan, Tanzania, and Uganda. The nominate birds have brown backs while the sub species dorsalis has a grey back and is found in Tanzania.
