Gregory is a national park in the Northern Territory

Northern Territory

The Northern Territory is a federal territory of Australia, occupying much of the centre of the mainland continent, as well as the central northern regions...

 (Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

), 359 km south of Darwin

Darwin, Northern Territory

Darwin is the capital city of the Northern Territory, Australia. Situated on the Timor Sea, Darwin has a population of 127,500, making it by far the largest and most populated city in the sparsely populated Northern Territory, but the least populous of all Australia's capital cities...

.

Birds

The park has been identified by BirdLife International

BirdLife International

BirdLife International is a global Partnership of conservation organisations that strives to conserve birds, their habitats and global biodiversity, working with people towards sustainability in the use of natural resources...

 as an Important Bird Area

Important Bird Area

An Important Bird Area is an area recognized as being globally important habitat for the conservation of bird populations. Currently there are about 10,000 IBAs worldwide. The program was developed and sites are identified by BirdLife International...

 (IBA) because it supports much of the eastern subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

 of the White-quilled Rock-Pigeon

White-quilled Rock-Pigeon

The White-quilled Rock Pigeon is a species of bird in the Columbidae family. It is endemic to Australia.-References:* BirdLife International 2004. . Downloaded on 24 July 2007....

 and small numbers of the endangered Gouldian Finch

Gouldian Finch

The Gouldian Finch, Erythrura gouldiae , also known as the Lady Gouldian Finch, Gould's Finch or the Rainbow Finch, is a colorful passerine bird endemic to Australia. There is strong evidence of a continuing decline, even at the best-known site near Katherine in the Northern Territory...

, as well as populations of the Chestnut-backed Buttonquail, Partridge Pigeon

Partridge Pigeon

The Partridge Pigeon is a species of bird in the Columbidae family.It is endemic to Australia.Its natural habitats are subtropical or tropical dry shrubland and subtropical or tropical dry lowland grassland....

, Yellow-rumped Mannikin and several other near-threatened or savanna

Savanna

A savanna, or savannah, is a grassland ecosystem characterized by the trees being sufficiently small or widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of C4 grasses.Some...

-biome

Biome

Biomes are climatically and geographically defined as similar climatic conditions on the Earth, such as communities of plants, animals, and soil organisms, and are often referred to as ecosystems. Some parts of the earth have more or less the same kind of abiotic and biotic factors spread over a...

-restricted species.