Sulawesi Bush Warbler

Locustella castanea

A sparrow-sized dark warbler with an often scruffy-looking, graduated tail. Has dark chestnut-brown upperparts, a whitish eyebrow, a distinct white throat, and dull grayish underparts. Formerly grouped with Buru Bush Warbler and Seram Bush Warbler under the name “Chestnut-backed Bush Warbler.” A secretive inhabitant of montane and foothill forest, often creeping around on or near the ground. Darker above and dingier below than Gray’s and Middendorff's Grasshopper-Warblers, and also has a clean-cut white throat; almost identical to Buru and Seram Bush Warblers, but ranges do not overlap. Calls include a sharp metallic “chit” and a drawn-out, wavering buzzy note, “tzeeoooreee.” There is some variation in songs, which usually comprise three high-pitched buzzing notes, “tzeeee-tzeee-tzeee,” higher-pitched on the final note.

识别特征

The Sulawesi bush warbler (Locustella castanea) is a species of Old World warbler in the family Locustellidae. It is endemic to the island of Sulawesi in Indonesia where it is found on the forest floor.

分类信息

There are two subspecies:

学名
Locustella castanea
命名信息
(Büttikofer, 1893)
Passeriformes
Locustellidae
Locustella

分布与栖息地

The Sulawesi bush warbler is found in undisturbed primary montane forest and in secondary forest, as well as adjoining thick scrub, bushes and rank grassland. It has a preference for moss-covered rocks and tree trunks densely clad with vines. On Seram it frequents lower mountain slopes in Lithospermum and Castanopsis woodland with Shorea, Agathis and Dacrydium trees, ferns and mosses, and also dense patches of bamboo. One of the places where this bird can be found on Sulawesi is the Gunung Ambang Nature Reserve.

行为

The Sulawesi bush warbler is a mostly ground-dwelling bird, skulking in the undergrowth and running on the forest floor in a manner reminiscent of a mouse. It often flicks its wings over its back and cocks its tail slightly. It sometimes sings perched on a low branch. The song is a repetitive series of short, insect-like buzzing trills, "tzeeeuuutzeee". The breeding habits of this species are unknown but a fully-fledged juvenile has been seen in August.

保护状况

Population trend: stable.

种群趋势
stable

照片

其他鸟类

LeConte's Thrasher

LeConte's Thrasher

Toxostoma lecontei

The palest thrasher; entirely light tan with whiter throat. Undertail coverts peach colored. Bill dark and strongly curved; eye dark. Found in dry flat deserts with open ground, often seen running between patches of low bushes. Shy and difficult to see well. Song similar to other thrashers, often with doubled or tripled notes; tends to be rather slow.

Broad-tailed Paradise-Whydah

Broad-tailed Paradise-Whydah

Vidua obtusa

Lays its eggs in the nests of Orange-winged Pytilia. The distinctive breeding male has a long, broad tail. Non-breeding males and females are nondescript sparrow-like birds with striped heads and pale underparts. Found in broadleaf woodland, mainly miombo. Most records are of the conspicuous and easily identified breeding-plumaged males. Mimics the inconspicuous vocalizations of its host Orange-winged Pytilia. Breeding male is similar to Eastern Paradise-Whydah, but has a shorter and broader tail, and darker buff and rufous coloration on the nape and breast. Non-breeding male and female are very similar to Eastern, but have a paler bill and lack strong “comma” marks on the cheek. Also similar to female and non-breeding male indigobirds, but larger.

Purple Honeycreeper

Purple Honeycreeper

Cyanerpes caeruleus

Very small tanager, widespread and common in lowlands and foothills of northern South America. Male is indigo-blue with narrow black mask, black throat, and black wings. Note long decurved bill and yellow legs to separate from other honeycreepers in most of range. Female much different: she is mostly green with pale streaking on underparts, a grizzled buffy-brown face, and a blue mustache stripe. Extremely similar to Shining Honeycreeper, but very little range overlap. Male Shining has larger black throat patch and slightly shorter bill; female has duller, grayer crown and less buffy face. Usually in small groups, often accompanying a mixed-species flock in the canopy. Found in forests, edges, and gardens.

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