Japanese grosbeak

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The Japanese grosbeak (Eophona personata) is a finch native to East Asia. It is also sometimes referred to as the Japanese or masked hawfinch due to superficial similarities to the well-known Eurasian species.

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.

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. source

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