Von Schrenck's Bittern

Von Schrenck's bittern is a small bittern, 33–39 centimetres long, with a short neck, a longish yellow beak and yellow legs. The male is uniformly chestnut above and buff below and on the wing covert feathers. The female and juvenile are chestnut all over, with white speckles above and white streaks below. In flight it shows black flight feathers and tail. It is named after Leopold von Schrenck, the nineteenth-century Russian zoologist, and was formerly placed in the genus Ixobrychus. (Wikipedia, general species account)

It breeds in southeast Siberia, east China, the Korean Peninsula and Japan, and winters from the Malay Peninsula to the Greater Sunda Islands, Sulawesi and the Philippines, passing through the rest of Southeast Asia. It is an exceptionally rare vagrant as far west as Europe, with a single sighting in Italy in 1912. (Wikipedia, general species account)