The species in the genus are distributed throughout Sub-Saharan Africa, tropical Asia, and Australasia. Two of the four species in the genus were originally classified in Excalfactoria, one was classified in Anurophasis, and one was classified in Coturnix. Several phylogenetic studies found these species to all group together into a single genus, which was followed by the International Ornithological Congress in 2021.
|Common and binomial names||Image||Range|
|Brown quail (Synoicus ypsilophorus)||Mainland Australia, Tasmania and Papua New Guinea; introduced to New Zealand and Fiji|
|Snow Mountain quail (Synoicus monorthonyx)||Snow and Star Mountains, West Papua (Indonesia) and Papua New Guinea|
|King quail (Synoicus chinensis)||India and Sri Lanka east to Taiwan, south to eastern Australia|
|Blue quail (Synoicus adansonii)||Sub-Saharan Africa, from Zambia north to Ethiopia, and west to Sierra Leone|