Bird nest July to September), it is not in others, and the swiftlets are declining in areas where the harvest reaches unsustainable levels. Some species of birds are also considered nuisances when they nest in the proximity of human habitations. Feral pigeons are often unwelcome and sometimes also considered as a health risk. The Beijing National Stadium, principal venue of the 2008 Summer Olympics, has been nicknamed "The Bird Nest" because of its architectural design, which its designers likened to a bird's woven nest. In the Victorian era, naturalists often collected bird's eggs and their nests. The study of bird nests is
The Nest (football ground) surplus to requirements before the site was redeveloped after the war. It was occupied for a time by Bertram Books’ factory and offices, but is now a housing development. A small section of the concrete wall is all that remains of The Nest. In February 2011, the site was marked by the installation of a sculpture of a ball passing between two tall posts. The Nest (football ground) The Nest was the former home ground of Norwich City F.C., used for 27 years between 1908 and 1935. Before The Nest, the team played at a ground in Newmarket Road. Today,