Gray-crowned Babbler
Pomatostomus temporalis
Large, conspicuous songbird with long decurved bill, dark gray mask, pale gray crown, and whitish eye. Underparts variably reddish brown, with white throat and upper breast. Juvenile similar but eye dark. Forages in small groups actively, almost comically, through open woodlands, including agricultural areas with some remaining native vegetation.
分类信息
Two subspecies are recognised within Australia and New Guinea.<p>Pomatostomus temporalis temporalis – This subspecies occurs within Australia in the states of Victoria, eastern Queensland (including Cape York), New South Wales and south-eastern South Australia. It is a vagrant or accidental visitor to the Australian Capital Territory. It is also the subspecies believed to occur within New Guinea.<p>Pomoatostomus temporalis rubeculus – This subspecies occurs in Australia within the states of Western Australia, Northern Territory, western Queensland and a small area of northern South Australia.<p>The breast color is usually used as the distinguishing morphological character between the subspecies, with a creamy white breast grading to mid-grey in P. t. temporalis and a mid to deep rufous brown breast in P. t. rubeculus. Other differences relate to brow coloration, facial bands through the eye, tail length and overall size. A zone of intergradation occurs between the two subspecies in north-central Queensland.
- 学名
- Pomatostomus temporalis
- 命名信息
- (Vigors & Horsfield, 1827)
- 目
- Passeriformes
- 科
- Timaliidae
- 属
- Pomatostomus
分布与栖息地
- 迁徙
- Resident species
保护状况
There are numerous lists of threatened fauna from within Australia. The official list of threatened species on the Australian Environment Protection and Biodiversity Conservation Act 1999 does not consider the grey-crowned babbler (either as a species or subspecies) to be threatened.<p>From other sources, the national status of the grey-crowned babbler varies. The eastern subspecies is increasingly being considered threatened, although not by all:<p>The conservation status of the grey-crowned babbler varies from state to state within Australia. For example:<p>The key process that has led to the decline of the eastern subspecies of the grey-crowned babbler has been the historic loss and fragmentation of its preferred woodland habitat. Grey-crowned babblers generally have a poor ability to immigrate across unsuitable habitats. As a consequence of fragmentation, breeding success and groups sizes decline. Babbler groups are more susceptible to stochastic events leading to local extinction from a fragment. Once a fragment has lost its population of grey-crowned babblers, natural recolonisation rarely occurs because of the species' poor dispersal ability.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Gray-headed Babbler
Stachyris poliocephala
Plain and unremarkable babbler; warm rusty-brown with a dark gray face and a streaked crown. Pale eye stands out against the dark face and gives the bird a somewhat crazed appearance. Shy and difficult to see as it forages in dense tangles and undergrowth. Habitat varies within range; most common in lowlands on the mainland, and in foothill and lower montane forest on Borneo and Sumatra. Song variable but consistently high and whistled, often with an ascending quality. Calls include a long, uniform rolling chatter and harsh scolding.
Redthroat
Pyrrholaemus brunneus
Small gray scrubwrenlike bird with a fine bill, usually observed in shrubland, including mulga woodlands. Gray-brown above, paler below. Female pale around the face and throat; male has small rusty-red throat patch. Usually feeds on or near the ground. Larger than thornbills and rather plump, more like a whiteface. Song a sustained warbling, trilling medley, with buzzing and mimicking mixed in.
Namaqua Warbler
Phragmacia substriata
A prinia-like warbler with a russet-colored back and crown, a plain grayish face, and a whitish throat. The long, graduated tail and fine breast streaks are distinctive. Pairs are resident and restricted to the semi-arid Karoo, where they are specialists of reedbeds and thorn tree thickets along dry drainage lines. The species’ presence is often detected by its distinctive song, a dry sharp “tsit” rapidly followed by a sweeter accelerating rattle “tsit-trrrrrrrrrrrrr.” The similar Karoo Prinia differs from Namaqua Warbler by having a shorter scruffier tail, duller gray-brown upperparts, and boldly blotched underparts with streaking that can reach the throat. The voice is also different.
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