Materials on phenology of bird migration in Sumy part of the Seym river valley. - V.N. Grishchenko. - Avifauna of Ukraine. 4. 2008. - P. 71-83.
Data about timing of spring and autumn migration of 106 bird species collected in 1977–2007 are presented. [Russian].
Key words: Sumy region, migration, phenology.
Address: V.N. Grishchenko, Kaniv Nature Reserve, 19000 Kaniv, Ukraine; e-mail: