Middendorff's Grasshopper Warbler
The Middendorff's grasshopper warbler (Helopsaltes ochotensis) is a species of Old World warbler in the family Locustellidae. It breeds in eastern Siberia to northern Japan, Kamchatka Peninsula and northern Kuril Islands. It winters in the Philippines, Borneo and Sulawesi and in small numbers in China, Hong Kong, South Korea, Malaysia, Taiwan and the U.S.A.
The common name commemorates Alexander Theodor von Middendorff (1815–1894), a German–Russian naturalist who traveled extensively in Siberia.