In which country did the 'Schweizer' breed of domestic chickens originate?

The 'Schweizer', German: 'Schweizerhuhn' or "Swiss chicken", is a Swiss breed of domestic chicken. It was first bred in 1905 in Amriswil, in the canton of Thurgau, in north-east Switzerland. It is kept mainly in German-speaking areas of the country.

The 'Schweizer' breed was created in 1905 by Alfred Weiss, who cross-bred various chicken breeds, mainly white Orpingtons and Wyandottes, to produce a good dual-purpose chicken. A breed association was formed in 1910, and a breed standard was established. The breed had a period of success between the First and Second World Wars, but after the war the industrialisation of agriculture and the advent of imported hybrid layer breeds led to rapid decline in its popularity. By 1971 the breeders' club had only six members, however, it was reported that in 2010, there was a population of 1600–1650 birds, so breed numbers are slowly rising.

The 'Schweizer' breed is entirely white, with a red rose comb. Cocks (roosters) weigh on average between 2.8–3.5 kg and hens 2.4–2.8 kg, and 'Schweizer' hens reportedly lay about 120 eggs per year per bird.