This list should be regarded as being 'in beta'. Information is based on dictionaries and other sources. Many Kazakh, Turkish, and Korean glosses are highly tentative. Comments and corrections welcome.
Until recently the buttonquails (the bustard quails or hemipodes) have not been listed as occurring in Mongolia. The 2007 official list of names bestows the name Гурван шивүүрт gurvaŋ shivüürt 'three-spined' on the locally occurring species, where 'spine' presumably refers to the bird's toes.
However, the family name in the same volume is given as Гурван шивнүүрийнхэн gurvaŋ shivnüüriŋkheŋ 'the three claw-boned' referring to the metacarpal or metatarsal bones of an animal. This suggests that the name should actually be Гурван шивнүүрт gurvaŋ shivnüürt 'three-clawed'. Other lists (such as the Dictionary of Vertebrate Animals of Mongolia) also use Гурван шивнүүрт gurvaŋ shivnüürt. Although this is a strange choice of terminology to indicate 'three-toed' -- other three-toed birds are named either Гурванхуруут gurvaŋ huruut or Гурван хумст gurvaŋ khumst, both meaning 'three-toed' -- we will adopt the шивнүүрт shivnüürt version as correct.