The spinifex pigeon (Geophaps plumifera), also known as the plumed-pigeon or gannaway pigeon, is one of four endemic Australian bird species within the genus Geophaps. It occurs within a broader group known as bronzewing pigeons. This species is listed under the International Union for Conservation of Nature (IUCN) Red List category of "least concern". It most frequently occurs in arid and semi-arid habitats containing hummock-forming grasses of the genera Triodia and Plectrachne.
The spinifex pigeon is a small and compact pigeon, which weighs 80-110 g, has a mean body length of 20 - 23.5cm, and has their wingspan of 30–35 cm. Males are slightly larger than females, and generally difficult to visually differentiate.
The plumage is distinctively rufous-brown with thin black bars on the wings and back. The forehead, sides of crown and ear coverts are grey and the bill is black. The facial markings are bold and distinctive, a bright red facial mask is bordered by a black supercilium and moustachial stripe. A white band extends from the chin to behind the eye and the throat is black. A white stripe is present on the breast, and the legs and feet are grey. There is no seasonal variation in plumage.
There is substantial geographical variation in the colour of the plumage on the belly, which is reflected in the separation of the western brown-bellied birds from the other subspecies recognised.