Taeniopygia guttata

The Sunda zebra finch (Taeniopygia guttata) is a species of bird in the family Estrildidae. It is found in the Lesser Sundas. For almost two centuries, its closest relative from Australia was generally included in T.guttata as a subspecies; since the 2020s it is generally considered a separate species Taeniopygia castanotis.

Most pre-2020 literature referencing "T.guttata" actually refers to the birds now known as T.castanotis – in particular physiological, neurological and behavioral studies generally used "T.guttata" for the Australian species, because T.guttata sensu stricto was never kept in captivity in significant numbers, and thus was unavailable for such research.