Field signs. Operenie black with white spots on the underside of the body. For females and young birds belly white, white collar around his neck. Wing 500-530 mm, beak 80-91 mm (Ivanov, Shtegman, 1978). Distribution. Gnezditsya on the islands of the equatorial regions and subekvatorialnoy western half of the Pacific, Indian Ocean and the southern half of the equatorial areas of the Atlantic Ocean. Zalety registered to the shores of Primorye and the Amur river valley downstream (Stepanyan, 1990). References. |
