Breeding of Coal Tit in the National Park “Desnyansko-Starogutski” (Sumy region). - Yu.V. Kuzmenko. - Berkut. 13 (1). 2004. - P. 92.
The Coal Tit has been observed in the National Park only during autumn migrations and wintering. For the first time a breeding pair was found in a birch-spruce forest in 2002. [Ukrainian].