Buff-rumped Thornbill
Acanthiza reguloides
Small bird with thin pointed bill. Upperparts grayish brown towards southern end of range and more olive-brown farther north. Underparts are varying levels of yellow depending on subspecies. Distinctive orange-brown rump in all subspecies, some also with and orange-brown tone in lores. Pale eye. Inhabits open habitats, particularly eucalypt forests and other woodlands, where it feeds in small flocks in bushes and branches of trees.
分类信息
Early classifications of the genus Acanthiza based on plumage and morphology recognised one to three genera with a varying number of species in each. However, recent classifications have recognised one genus containing five species groups or four groups excluding the New Guinean murina.<p>The taxonomy of the Acanthiza reguloides has undergone significant change and debate since its early classification. Despite marked differences between A. reguloides and A. squamata, they have been combined as a single species since 1926. Four subspecies of Acanthiza reguloides are recognised. These are:
- 学名
- Acanthiza reguloides
- 命名信息
- Vigors & Horsfield, 1827
- 目
- Passeriformes
- 科
- Acanthizidae
- 属
- Acanthiza
分布与栖息地
Primarily distributed in eastern Australia, the buff-rumped thornbill's range spans from Chinchilla, Queensland, west to Cobar, New South Wales, across Victoria and southeastern South Australia. This is an area of approximately 2 000 000 km2. This adaptable species thrives in dry sclerophyll forests and open eucalypt woodlands that have an open or sparse understorey.
- 迁徙
- Resident species
行为
Buff-rumped thornbills are often found in small, chatty groups of approximately 20 individuals, but may join during non-breeding season to form larger clans. They continuously twitter as they forage. Their vocalizations are characterized by a rapid pitta-pitta-pitta-pit call. They have a hearing range of 5000 Hz and a hearing threshold of 10 dB. In flight, Acanthiza spp. exhibit a characteristic undulating path. These birds are exceptional acrobats, displaying a remarkable ability to remain head downward. Birds are known to be territorial.
保护状况
Bird populations are known to be secure in all states of Australia in which they are present. However, urban development and habitat modification has caused a decline in numbers in some areas.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
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Quiscalus nicaraguensis
Long-tailed blackbird, very similar to Great-tailed Grackle but smaller. Male is darker black with less obvious glossiness (but still some, usually greenish); female is very similar to female Great-tailed but paler below. Extremely limited range in the vicinity of Lake Nicaragua and Lake Managua, where small flocks can be found in open grasslands and wetlands.
Itatiaia Spinetail
Asthenes moreirae
Small, plain, long-billed and long-tailed spinetail with a restricted range. Found in bamboo thickets and clearings in montane forests with grass and shrubs where it forages in the understory. Note the rufous chin contrasting with a dull-brown body. The song is a high-pitched ascending and descending trill.
Black-faced Monarch
Monarcha melanopsis
A slim songbird with rather long tail and substantial bill. Gray above, rufous below, with gray head, black forehead and throat. Juvenile lacks black in face. In all plumages, small white crescent in front of eye. Often perches horizontally, slightly raising tail. Inhabits wetter forested areas along eastern coast of Australia, where it forages slowly for insects in foliage.
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