抄録
In October 29, 1950, I collected off the mouth of the Kakogawa, Hyogo Prefecture at the Honshu side of the Inland Sea a male of Thalasseus bergii cristatus among a flock of Larus crassirostris.
This species of a Tern is not uncommonly found in the Bonins, Ryukyus and further south but is a rare straggler to the Japanese main islands.
