Brambling Fringilla montifringilla, Microforest 1 (30.923889, 121.971635), Cape Nanhui, Shanghai, October. Male (R) shows marked variation between breeding and non-breeding plumage; female (L) shows less. All plumages have white rump (L). Breeding male has all-black bill, but in winter bill yellow with black tip, like female. Glossy blue-black head of breeding male becomes rusty-fringed in winter. Brambling breeds across Eurasia and is common winter visitor and passage migrant in Shanghai. (Craig Brelsford)
