Japanese Grosbeak
Eophona personata
A large finch with a powerful hulking bill that is an inhabitant of deciduous and mixed forests. Adults are not extremely sexually dimorphic, unlike the closely related Yellow-billed Grosbeak; both males and females have gray bodies with black heads, wings, and tail. Migratory race breeds in northern and central Japan and northeastern China and Russia, and winters in eastern and southeastern China, where it tends to be less common than Yellow-billed Grosbeak. Resident race present year-round in central and southern Japan.
识别特征
This is a large finch, with a reported weight of 80 g (2.8 oz) (for a single male) and a length of 18 to 23 cm (7.1 to 9.1 in). Among standard measurements, the wing chord is 10.2 to 11.7 cm (4.0 to 4.6 in), the tail is 8.3 to 9.5 cm (3.3 to 3.7 in) and the culmen is 2.1 to 2.6 cm (0.83 to 1.02 in). The signature feature of the Japanese grosbeak is its large, pointed bright yellow bill. The adult grosbeak has a large black marking extending from the nape to the chin and ear-coverts to the neck. The side of the neck is a contrasting pale whitish grey. The bird's underside is a more dull grey. The back is greyish-brown while the flanks are washed with a gingery or tawny-brown colour. The wings and tail are black but for a white patch on the inner-coverts and band of white in the middle of the primaries, which is visible in flight. Juveniles are a duller grey overall with no black on head. The subspecies, E. p. magnostris is slightly larger than the nominate race. It is also generally paler in tone with a smaller white patch the on primaries.<p>Among the vocalizations issued by Japanese grosbeaks include a short but hard tak tak note given in flight. The song of these birds consists of a series of four flutey whistles.
分类信息
Genus: Eophona; Family: Fringillidae; Order: Passeriformes.
- 学名
- Eophona personata
- 命名信息
- (Temminck & Schlegel, 1847)
- 目
- Passeriformes
- 科
- Fringillidae
- 属
- Eophona
分布与栖息地
Breeding range: PAL : Amurland, Ussuriland and Sakhalin (Russian Far East), Heilongjiang and Jilin (ne China), Hokkaido through Kyushu (Japan). Non-breeding range: to Ryukyu Is. (s Japan), s China and se Asia (rare).
- 繁殖区
- PAL : Amurland, Ussuriland and Sakhalin (Russian Far East), Heilongjiang and Jilin (ne China), Hokkaido through Kyushu (Japan)
- 非繁殖区
- to Ryukyu Is. (s Japan), s China and se Asia (rare)
- 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
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