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
City Stadium (Orsha) 2008 Dazhynki festival (which was hosted in Orsha). At present, the stadium is part of Orsha Physical Culture and Sports Club, an organization which manages several other sport facilities in Orsha and neighboring towns. City Stadium (Orsha) Central City Stadium is a multi-purpose stadium in Orsha, Belarus. It is mostly used for football matches and is a home stadium for FC Orsha. The stadium holds 2,582 spectators. Central City Stadium has been a home ground for a local club FC Orsha. During 1998–1999 it also hosted home games of Lokomotiv-96 Vitebsk, whose usual home stadium Dinamo was closed for a