The
genus Gracula was introduced in 1758 by the Swedish naturalist
Carl Linnaeus in the
tenth edition of his
Systema Naturae. The genus name is from
Latin graculus, an unknown bird sometimes identified as the
western jackdaw. Of the seven species listed by Linnaeus,
George Gray designated the
common hill myna (
Gracula religiosa) as the
type species. Until recently only two species were recognised,
G. religiosa and
G. ptilogenys. Previously, all
Gracula were considered to belong to a very variable species commonly called the
hill myna. Three additional
subspecies of
G. religiosa are increasingly being considered as distinct
species. Formerly, the Sri Lanka hill myna was considered to be a
subspecies of the common hill myna, but today all major authorities recognise them as separate. Comparably, the Enggano, Nias, Tenggara, and southern hill mynas have traditionally been treated as subspecies of the common hill myna; a treatment still preferred by some authorities.
Species Four extant
species are recognized: A 2020 study found that the subspecies
G. religiosa miotera or
Simeulue hill myna, which is endemic to
Simeulue, Indonesia and has not been recognized in recent taxonomic arrangements aside from
HBW (
Handbook of the Birds of the World), also likely represents a distinct species and was likely driven to
extinction in the wild in the late 2010s due to unsustainable collecting for the
wildlife trade. The paper recommends rescuing the last genetically pure captive individuals for the purpose of
captive breeding.
Former species Formerly, some authorities also considered the following species (or subspecies) as species within the genus
Gracula: •
Magpie-lark (as
Gracula picata) ==Description==