Aleutian Tern (Onychoprion aleuticus) Science Article 3
Recent observations of the Aleutian Tern (Sterna aleutica) in the coastal waters aroundHong Kong in spring and fall, and Singapore and the Indonesian islands of Karimun and Bintan between October and April indicate that at least part of the population of this species migrates through and winters in these areas. Our observations during December 1997,suggest that the coastal waters of Java, Bali and Sulawesi may form an additional part of the winter range of this species.
Norman P. Hill and K. David Bishop, Wilson Bull., 11 l(4), 1999, pp. 559-560