Streaked Shearwater

The streaked shearwater is a petrel of the Western Pacific ranging from Japan to Australia. It has broad wings, a brown upperside and white underwings, a head and neck flecked white and white underparts. It is 45 to 52 cm long with a wingspan of 103 to 113 cm. It is pelagic but also found inshore (Wikipedia, general species account).

It nests in burrows on offshore islands of Japan and the Korean Peninsula, preferring forested hills, then migrates south to seas off northern New Guinea, the Arafura Sea and the South China Sea. It feeds mainly on fish and squid and follows fishing boats. Wikipedia notes reports from the southern coast of India, but gives no Sri Lankan account. The 2012 National Red List gives no status under this name.