Passage of Erithaus sibilaus and observation of Fregata ariel

Abstract

A new record of Erithaus sibilaus from Sado Is. On 18 May 1969, a female bird of this species was obtained by the author on the police office in Riyoutsu City Niigata Prefecture. By Akira Matsunaga observed Fregata ariel at Yonuyama big bridge neighbourhood in Kashiwazaki, Niigata Prefecture.