Bonasa umbellus (Linnaeus, 1766)

Homonyms: Bonasa umbellus (Linnaeus, 1766)
Common names: Francolino di monte americano in Italian; Grévol engolado in Spanish; Grévol engolado in Spanish; Grévol engolado in Spanish; Gélinotte huppée in French; Gélinotte huppée in French; Gélinotte huppée in French; Kraaghoen in Dutch; Kragejerpe in Norwegian; Kragenhuhn in German; Kragenhuhn in German; Kravehjerpe in Danish; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed Grouse in English; Ruffed grouse in English; apkakles mežirbe in Latvian; apykaklėtoji jerubė in Lithuanian; cieciornik in Polish; galléros császármadár in Hungarian; grèvol crestat in Catalan–Valencian; gélinotte huppée in French; gélinotte huppée in French; jariabok hrivnatý in Slovak; jeřábek kanadský in Czech; kraepüü in Estonian; kragjärpe in Swedish; ruffed grouse in English; ruffed grouse in English; röyhelöpyy in Finnish; tetraz-de-colar in Portuguese; tetraz-de-colar in Portuguese; tetraz-de-colar in Portuguese; Воротничковый рябчик in Russian; エリマキライチョウ in Japanese; 披肩榛雞 in Chinese; 披肩榛鸡 in Chinese; Ruffed Grouse in English; kragejerpe in Norwegian Bokmål

Avibase - the world bird database.
Banks, R. C., R. W. McDiarmid, and A. L. Gardner, 1987: Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79.
Dickinson, E. C., and J. V. Remsen Jr., eds., 2013: null. The Howard and Moore Complete Checklist of the Birds of the World, 4th Edition, Vol. 1 Non-passerines. l + 461.
Dickinson, Edward C., ed., 2003: null. The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition. 1039.
Gill, Frank, and Minturn Wright, 2006: null. Birds of the World: Recommended English Names. ix + 259.