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| Aquila audax | |
|---|---|
| Name | Wedge-tailed eagle |
| Status | LC |
| Status system | IUCN3.1 |
| Genus | Aquila |
| Species | audax |
| Authority | (Latham, 1802) |
Aquila audax is a large raptor native to Australia, notable for its wedge-shaped tail and extensive range across diverse ecosystems. First described during early 19th-century exploratory voyages and catalogued in natural history collections, the species features prominently in Indigenous Australian culture, colonial records, and contemporary conservation assessments. Widely studied by ornithologists, museum curators, and ecological researchers, the species appears in faunal surveys and wildlife management plans across states and territories.
The species was named by John Latham in 1802 following specimens obtained during voyages associated with James Cook-era exploration and later revisions by taxonomists connected to the British Museum and the Linnean Society. Historical classifications placed it within broad raptor assemblages discussed by figures such as Georges Cuvier and John Gould, while 20th- and 21st-century revisions used morphological comparisons in institutions like the Natural History Museum, London and genetic analyses from laboratories linked to the Australian Museum and the CSIRO. Common names used in colonial records and field guides include terms popularized by authors associated with the Royal Australasian Ornithologists Union and regional field naturalist clubs; Indigenous names recorded by anthropologists and ethnographers appear in museum archives and studies from universities such as the University of Melbourne and the Australian National University.
Adult birds display a distinctive wedge-shaped tail and a large wingspan documented in field guides produced by the Royal Society of Tasmania and ornithological handbooks from the Field Museum. Plumage varies from dark brown to black with lighter juvenile phases noted in specimens held by the South Australian Museum and photographic records from the National Library of Australia collections. Dimorphism in size between sexes has been described in journals published by the Austral Ornithologists Union and comparative studies from the American Museum of Natural History; measurements often cited in theses from the University of Sydney and the University of Queensland show substantial mass and wingspan ranges. Vocalizations and calls are recorded in bioacoustic projects affiliated with the Australian Acoustic Observatory and documented in atlases overseen by the Atlas of Living Australia.
The species occupies a broad range across mainland Australia and historically in parts of Tasmania, with distributional records maintained by state wildlife agencies such as the New South Wales National Parks and Wildlife Service and the Parks and Wildlife Service (Tasmania). Habitat types include arid interior regions catalogued by researchers at the University of Adelaide, pastoral landscapes monitored by the Department of Agriculture and Water Resources (Australia), and forested areas studied by teams from the CSIRO and the Australian National Botanic Gardens. Occurrence data feature in conservation assessments prepared for the IUCN Red List and national environmental legislation evaluations submitted to the Department of the Environment and Energy (Australia).
Territorial and aerial behaviors have been described in ethological studies conducted by researchers at the University of Western Australia and field studies coordinated with the Australian Wildlife Conservancy. Soaring patterns and thermalling abilities are often compared in analyses published in journals connected to the Royal Society and presented at conferences held by the Ecological Society of Australia. Interactions with other predators, including reports involving dingoes referenced in studies from the University of New England and invasive species management programs run by the Invasive Species Council, form part of ecosystem-level research featured in collaborative projects with the CSIRO.
Dietary studies cite a range of prey documented in ecological surveys by the Australian Bureau of Agricultural and Resource Economics and field reports from the Museum Victoria. Prey items include macropods noted in studies from the University of Melbourne, introduced mammals recorded by the Department of Agriculture and Water Resources (Australia), and carrion observations archived by the National Environmental Science Programme. Hunting techniques and prey selection are detailed in theses from the Australian National University and papers presented at meetings of the Australasian Raptor Association.
Breeding biology and nest-site selection have been documented in long-term monitoring projects run by the Department of Environment, Water and Natural Resources (South Australia) and conservation NGOs such as the BirdLife Australia. Nest construction, clutch size, and fledging success figures appear in studies from the University of Tasmania and in management plans submitted to state conservation authorities including the Victorian Department of Environment, Land, Water and Planning. Juvenile dispersal and survivorship are subjects of telemetry studies undertaken with equipment supplied by research groups at the Australian National University.
Assessed as Least Concern on the IUCN Red List, the species nonetheless faces localized threats documented in reports by the Commonwealth Scientific and Industrial Research Organisation and environmental impact assessments reviewed by the Australian Environmental Protection Agency-equivalent agencies. Threats include habitat modification referenced in submissions to the Commonwealth Parliament and anthropogenic mortality recorded in incident databases maintained by the National Parks and Wildlife Service and NGOs such as the Australian Wildlife Conservancy. Conservation actions and legal protections are implemented via state biodiversity strategies coordinated with organizations like BirdLife Australia and research partnerships with universities including the University of Canberra.