Remarkably, our backyards are home to untold wild inhabitants. I don’t think there is anybody that can identify all of them. However, the fact is we do not know the correct name of them to appreciate their beauty and the role they play in wild communities. One group of organisms most of us are largely unfamiliar with is known as the tree bracket (also called shelf) fungi.
As their name suggests, tree bracket fungi grow on trees (both dead and alive). The shelf-like structures were see growing on the sides of trees are the fungi’s fruiting bodies. Each species of bracket fungi has its own distinctive appearance.
These look like they may have gills. Can you confirm? If so, they are a mushroom, likely a Pleurotus species.