On the findings of the American wigeon Anas americana during the spring migrations on the islands of the Sakhalin oblast

Second edition. First publication: Matyushkov G.V., Zdorikov A.I. 2009. On the findings of the American sviyazi (Anas americana Gm.) During the spring migrations on the islands of the Sakhalin region / / Vestn. Sakhalin. Museum 16: 253-256.