On May 21, 2020, three nests of russet sparrow (passer rutilans) and 15 russet sparrows were discovered under the tiled roof of a house near Lagoon Sijung in Kangwon Province.
Two young sparrows fed by their mother were also observed on a pine branch.
The russet sparrow is distributed in the southeastern part of China, southern Sakhalin and southern Kurils of Russia, Japan and northwestern part of India.
It is known as a summer bird which mainly lives in the middle and southern parts of the Korean peninsula and in the hilly areas in the southeastern part in particular.
In the DPRK, the bird has been observed four times up to now since it was discovered for the first time in the city of Nampho on the west coast of Korea in August 1984.
It has never been known nor recorded that the bird breeds in the northern central part of the Korean peninsula.
A pair of russet sparrows were discovered around Lagoon Sijung in Thongchon County, Kangwon Province in 2018. And their breeding was first observed during the regular survey of birds in the areas of Thongchon County, Kangwon Province, including Tongjongho Migrant Bird (wetland) Reserve (Tongjong and Chona lagoons), from May 18 to 25, 2020.
This is the first observation in the area of Lagoon Sijung as well as the first record of its breeding in the DPRK.