Photo/Illutration A flock of greater white-fronted geese take flight en masse in the early morning on Nov. 17 in Kurihara, Miyagai Prefecture. (Shigetaka Kodama)

Heralding the arrival of winter, massive flocks of geese migrating from Siberia are landing in a marsh in Miyagi Prefecture in northern Japan, as local residents marvel at the sight.

At the crack of dawn, squadrons of greater white-fronted geese take flight en masse from the Izunuma marsh, which stretches across Kurihara and Tome in the prefecture, to look for unpicked crops in fields. 

According to the Miyagi Prefectural Izunuma-Uchinuma Environmental Foundation, the number of incoming geese in the area reached an estimated 100,000 on Nov. 11, the peak for this season.

The foundation studies and researches the nature and environment of the Izunuma marsh as well as the nearby Uchinuma marsh. Every year, the geese fly to regions in eastern Russia in early February after wintering in and around the Izunuma marsh.

The marsh is a winter habitat for birds such as swans and geese and has been included in the Ramsar Convention’s list of wetlands of international importance.

The convention is an international treaty aimed at conservation and wise use of wetlands, and it maintains the list to recognize the wetlands’ significance and ensure their effective management.