Which bird uses its wings to form a canopy when fishing?

The black heron ('Egretta ardesiaca') also known as the black egret, is an African heron. It is well known for its habit of using its wings to form a canopy when fishing.

The black heron is a medium-sized (42.5–66 cm in height), black-plumaged heron with black bill, lores, legs and yellow feet. In breeding plumage, it grows long plumes on the crown and nape.

The nest of the black heron is constructed of twigs placed over water in trees, bushes, and reed beds, forming a solid structure. The heron nests at the beginning of the rainy season, in single or mixed-species colonies that may number in the hundreds. The eggs are dark blue and the clutch is two to four eggs.