Pigeon fanciers from many countries exhibit their birds at local, inter-state or national shows and compete against one another for prizes. In England, the Philoperisteron Society conducted annual shows in the mid 1800s. There were also a London Columbarian Society. The extensive variations in the breeds attracted the attention of
Charles Darwin and played a major role in developing ideas on evolution. Some fanciers organize exhibitions exclusively for pigeons; one held in
Blackpool run by the
Royal Pigeon Racing Association is annually attended by about 25,000 people and generates around £80,000 profit, which is donated to charity. The largest pigeon show is held in
Nuremberg: the German National Pigeon Show, which had over 33,500 pigeons at the 2006 show.{{Cite news| last =Child | first =Brad | title ="Pigeon Pals Tour" Part II | newspaper =Purebred Pigeon (March/April 2007) | pages =71, 72 | year =2007 In the United States, there are hundreds of local, state and national pigeon clubs that sponsor shows. The largest shows are the National Young Bird Show, held in
Louisville, Kentucky in October, and the National Pigeon Association's Grand National, held in a different city each year and usually in January. ==Major breed families==