I discovered a Blackbird's nest close to my house in an ornamental shrub, 5 feet above the ground and in the back of the shrub, close to a wooden fence. It is about 5 feet from a pair of patio doors. Blackbird nests are constructed from grass, root fibres and moss and loosely formed in to an open, circular deep bowl, They are unlined, apart from softer dry grasses and more dry moss. The closely related Song Thrush - Turdus philomena builds a very similar nest but then lines the bowl with mud that dries to form a solid cup.