Blue-faced Parrotfinch
Erythrura trichroa
Colorful small finch, usually found in grassy forest clearings or forest edge habitats, often in close association with bamboo. Favors foothills and montane areas throughout much of its range, but descends into coastal lowlands on small islands and in the far eastern end of its range, on Australia’s Cape York Peninsula. Bright green plumage, with an obvious blue face and red tail and rump. Juveniles lack the blue face and are slightly duskier below. Forages at all levels of forest, from the ground up into the canopy, often taking seeds from grasses and bamboo. Call very thin and high-pitched.
识别特征
Blue-faced parrotfinch males are multi-shaded with colors ranging from light yellow-green to dark blue-green. On their forehead and face, there are deep blue feathers, and their tails are generally red to rusty red-brown. In terms of length, they are typically 13 cm (5.1 in) long.<p>On the other hand, the females are covered with a less vibrant blue and are slightly smaller and have more rounded heads.<p>Among the birds found in Queensland, there was no significant difference in plumage, bill shapes, or genetic composition. This is hypothesized to be caused by nomadic behaviors and the continued gene flow.
分类信息
- 学名
- Erythrura trichroa
- 命名信息
- (Kittlitz, 1833)
- 目
- Passeriformes
- 科
- Estrildidae
- 属
- Erythrura
分布与栖息地
The blue-faced parrotfinches prefer rainforest edges and dense grasslands that have woody plants, and they prefer to roost in rainforests. They are widely distributed and found at various altitudes, ranging from sea-level on hot tropical islands to 800–3000 m in New Guinea. It is reported that the blue-faced parrotfinches engage in seasonal and nomadic movements, partly due to their cold-sensitiveness. In the winter, they migrate to the lowlands where there is excessive rainforest clearance.
- 迁徙
- Resident species
行为
The blue-faced parrotfinches are inconspicuous and timid, retreating to grasslands for cover.<p>Blue-faced parrotfinches feed on grass and bamboo seeds, small insects, and figs. They primarily consume seeds of Brachiaria decumbens (Signal Grass), then the seeds of Lantana camara (West Indian Lantana), Panicum maximum (Guinea Grass), and A. patrei. They are adaptive enough to eat introduced food sources when they appear.<p>They forage primarily by perching (at an average height of 0.96 m) and less frequently by climbing and pecking. Due to this, there is not much strong competition between blue-faced parrotfinches and their sympatric species, who tend to forage primarily by climbing. Another reason for this lack of competition is that blue-faced parrotfinches partition food resources with other species by foraging at different preferred microhabitats.<p>Blue-faced parrotfinches are generally seen in patches, occasionally with 30 or more birds. The number of finches seen together increases in response to sufficient food resources.<p>The females usually lay an average of four eggs, with a maximum of eight. The average incubation time is 15 days, during which the female does most of the incubation and brooding. Meanwhile, the male is responsible for feeding the nestlings. The nestlings fledge around 21 days and continue to be fed by their parents for 10 to 20 days.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Fire-breasted Flowerpecker
Dicaeum ignipectus
Tiny songbird of mountain and hill forests; ranges from the Himalayas south to the Malay Peninsula on the Asian mainland, with an isolated population in Taiwan’s highlands. Adult male is dark blue above and pale creamy white below, with a black stripe leading down the belly from a brilliantly red patch like a bloodstain on the breast. Female is much plainer, brownish-olive above and off-white below; lacks the bright white throat of Plain and female Scarlet-backed Flowerpeckers. Often forages at flowers blooming in the canopy. Gives a high, thin, up-and-down “tsee’ip, tsee’ip, tsee’ip” and a rising series of ticks (often ending with more metallic notes); calls include dry tick notes and high, thin “tseet”s.
Yellow-streaked Warbler
Phylloscopus armandii
Dull brownish leaf warbler. Brown above with brownish-yellow underparts. Extremely similar in appearance to Radde’s Warbler, but Yellow-streaked has a more contrastingly pale brow stripe, finer bill, and fine yellow streaks on the breast. The breast streaks themselves are often not visible, instead appearing as a faint yellow wash from a distance. Dusky Warbler is somewhat similar but is much browner overall with a darker brow stripe and less contrast between upper- and underparts. Breeds in subalpine shrubbery and descends into foothills to winter in similar habitat. Song is a series of cascading tinkling, buzzy notes. Gives metallic “tinks”.
Ijima's Leaf Warbler
Phylloscopus ijimae
An uncommon migrant songbird through Taiwan, rarely encountered anywhere away from breeding grounds on Izu and Tokara Islands, Japan. Olive above and whitish below; best distinguished from similar species by narrow bill with yellowish lower mandible, brownish-pink legs, and weak head pattern. Prefers mature coastal broadleaf forests but uses bamboo patches and conifers during migration as well. Smaller than Eastern Crowned Leaf Warbler, with thinner bill and no crown stripe. Song consists of a series of trills; calls, given often, include a descending “twee” or quiet “pee.”
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