About Emberiza yessoensis (Swinhoe, 1874)
This species, Emberiza yessoensis (Swinhoe, 1874), commonly known as the ochre-rumped bunting, measures 15 cm in total length. It is typically the most richly coloured of all reed buntings, and has the pinkest legs and bill during the winter season. Adult males have a dark back and chestnut-coloured upperparts, with black and buff striping across the breast and sides of the body. They have a brown nape, and the sides of the neck are whitish. Females have a buffy submoustachial area and throat, black malar stripes, and a dark brown crown marked with pale streaking. Juveniles have a pale greyish-brown central stripe running along the crown, and a yellowish-brown rump. The species' calls can be transcribed as 'sur-swee-ik' and 'tik'.