A mass mortality event of Red-necked Phalarope, Phalaropus lobatus, in Iwamizawa, Hokkaido, Japan

Abstract

A mass mortality event involving 13 Red-necked Phalarope Phalaropus lobatus occurred in a suburb of Iwamizawa, Hokkaido, northern Japan, in September, 2010. Gross postmorterm examinations revealed that they were in good condition with healthy levels of subcutaneous fat, but they had sustained injuries suggesting that they died from a fatal collision.