Brown Songlark
Cincloramphus cruralis
Large brown songbird with long tail and long, strong legs. Males grayish with brown-edged feathers above, and very dark gray belly, breast, and face in breeding plumage. Female smaller, similar to nonbreeding male. Distinctive display flight: male climbs high in the air, then parachutes down with wings held up at an angle and with legs dangling. Found across much of Australia, less common in the southeast in drier agricultural and open grassland areas. Perches on fence posts. Distinctive song a scratchy five-note phrase.
识别特征
Male brown songlarks are 23–25 cm long versus 18–19 cm for females, and may weigh 2.3 times as much. The average weight of males was listed as 74.8 g (2.64 oz) and that of females is 32.4 g (1.14 oz). They are probably the most sexually dimorphic passerine in the world in size difference, as well as likely the largest species in the family Locustellidae. In general, the birds have a dusky pale-streaked with darker brown plumage and pale eyebrows. The underparts are brownish-white in the female, darker brown in the male. Breeding males may display a cinnamon colour. The eyes and bill are black, and the legs grey. Juveniles are smaller and paler with pinkish-brown bills. The call has been described as loud and creaky. The male is the principal singer, calling from perches or when rising above breeding territory.
分类信息
The brown songlark was described by Nicholas Aylward Vigors and Thomas Horsfield as Megalurus cruralis in 1827. John Gould placed it in the genus Cincloramphus in 1843, describing it as C. cantatoris.However, the specific name of the former authors took priority. Along with most Old World Warblers, this species was formerly placed in Sylviidae sensu lato, but molecular phylogenetic studies demonstrated that this broad grouping is not a cohesive evolutionary lineage and warbler species were assigned to various families.<p>An alternative generic name Cinclorhamphus is derived from Greek words cinclus/κιγκλος "wagtail" and ramphos/ραμφος "beak" and cruralis from the Latin root crur- "leg, shin".
- 学名
- Cincloramphus cruralis
- 命名信息
- (Vigors & Horsfield, 1827)
- 目
- Passeriformes
- 科
- Locustellidae
- 属
- Cincloramphus
分布与栖息地
The bird is found throughout Australia, except for parts of the far north and Tasmania. There are particularly dense populations in the southern parts of the country. It prefers open pastures and grassy scrub, and feeds on seeds and insects. The species is highly nomadic. Local numbers fluctuate depending on rainfall and the bird will often flee from drought-affected areas.<p>The brown songlark has a large range, between 1,000,000 and 10,000,000 km²; while population size has not been quantified the bird is reported to be common. The IUCN thus lists it as a species of least concern and it is considered "secure" by Australian authorities.
- 繁殖区
- AU : Australia (except far n and Tasmania), breeding mostly in s
- 非繁殖区
- to c Australia
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Hispaniolan Trogon
Priotelus roseigaster
This strikingly colored denizen of montane woodlands (and less often, mangrove swamps) is rather sedate. It is often found sitting upright and rather motionless, typically in pairs. One's first impression is often of a rather long and largish bird with a brilliant red belly, emerald back, and blackish head. No similar species occur within its range. Song is a tremulous “whut-will,” with second note longer and trailing off at end. The first note is sometimes omitted and second note is sometimes given as doublet or triplet. Calls include a shrill “whee” and soft coos. Though rather vocal, calling birds are difficult to locate due ventriloquial quality of their vocalizations.
Blue-winged Kookaburra
Dacelo leachii
Very large kingfisher with a lot of blue in the wings and tail. Note pale eye and pale, finely streaked head. Occurs across northern Australia in a variety of woodland habitats including parks and gardens. Often perches on powerlines. Its call is quite different to the Laughing Kookaburra, typically a loud rolling squawk and various loud yapping sounds.
Brown-rumped Seedeater
Crithagra tristriata
A plain seedeater of the Abyssinian highlands. Note the gray-brown back, the paler underparts, the white eyebrow, and the small white throat. Generally common in a variety of montane habitats including forest edge, woodland, scrub, and gardens. Similar in overall coloration to Reichard’s and Streaky Seedeaters, but easily separated by the plain unstreaked underparts. The simple song consists of repeated scratchy whistles.
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