White-throated Grasswren
Amytornis woodwardi
Distinctive long-tailed, chestnut-and-black bird with a stark white throat, found only in the western Arnhem Plateau of Northern Territory, in areas with large spinifex clumps around large sandstone boulders. Frequent burning of these areas has made this species very hard to find, and it is no longer reliably seen in accessible locations. Forages actively on the ground in pairs or small groups, running away into crevices when alarmed.
分类信息
The species was identified by Ernst Hartert in 1905. It is in the family Maluridae.
- 学名
- Amytornis woodwardi
- 命名信息
- Hartert, EJO, 1905
- 目
- Passeriformes
- 科
- Maluridae
- 属
- Amytornis
分布与栖息地
The white-throated grasswren is only found on and around the Arnhem Land sandstone massif, between Katherine and Maningrida, covering an area of 6,200 km2 (2,400 sq mi)<p>Its natural habitats are subtropical or tropical dry lowland grassland and rocky areas.
- 迁徙
- Resident species
保护状况
Its status is endangered on the IUCN Red List, last assessed in 2022, and in Australia under the federal Environment Protection and Biodiversity Conservation Act 1999, effective November 2014, and in the NT under the Territory Parks and Wildlife Conservation Act 2000.<p>It is threatened by habitat loss, as it depends on Triodia microstachya (spinifex grass) untouched by fire for at least five years. It is therefore threatened by more frequent bushfires (over 50 in 2021, with climate change playing a role in the increase), leading to inadequate habitat quality and lack of reproductive success. As the bird hops around rather than flies, it is vulnerable to predation by feral cats.<p>Its total population was estimated at between 5,000 and 10,000 individuals in 1992; no more than 10,000 mature birds in 2011, with numbers continuing to decline through loss of habitat. As of 2022[update] it has disappeared from many of the locations where it used to be spotted frequently, such as near Gunlom Falls in Kakadu National Park, Plum Tree Creek, the large population near the East Alligator River.[4]<p>The white-throated grasswren is one of 20 species targeted in the Australian Government's 20 birds by 2020 document, produced as part of its Threatened Species Strategy in 2015.[5]<p>As of 2022[update] Wardekken Indigenous rangers have been working on a project to help conserve the species with non-profit organisation Territory Natural Resource Management, funded by the federal government. One of the strategies used is Indigenous "patchwork" burning methods, which reduces the fuel load that helps to drive bushfires. They managed to spot some in June 2022, by using pre-recorded bird calls to attract the birds.[4]
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类

Crimson-backed Tanager
Ramphocelus dimidiatus
Striking red tanager with fairly limited range in lowlands and foothills below 1,300 m. Male is overall velvety red, brightest on the flanks and rump and darker on the head. Wings and tail are black. Females are duller reddish brown. Note silver bill with swollen base of lower mandible. Unlikely to be confused in range. Typically found in small flocks in shrubby open habitats and second growth.

Bushy-crested Jay
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Only blue-and-black jay in its limited range in interior of northern Central America. Found in brushy woodland, pine-oak forest and edge, and plantations, foraging at all levels. Usually in small groups, which can be noisy and conspicuous or very quiet and easily overlooked. Sometimes found with mixed-species feeding flocks that include Green Jays and orioles. Lower breast and belly are tinged blue but often appear black. Bushy crest usually held flattened and thus not noticeable.

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Arizelopsar femoralis
A small, distinctive starling with a tiny range in Kenya and Tanzania. The male has a blue-black back and breast and a white belly. Females have a brown back and breast and a pale belly with brown streaks. Both sexes show a yellow eye. Uncommon and local in montane forest. Found in the canopy, in pairs or small flocks, often perching up conspicuously on dead snags and other open perches. Similar to Sharpe’s Starling, but has a dark breast. The calls include a sharp “sveet” and the song is a rapid, high-pitched tinkling phrase.
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