An interesting case of the Marsh Harrier nesting in the Volynia.- M.V. Khimin. - Berkut. 2. 1993. - P. 54.
In May of 1991 near the village of Rokynya (Lutsk district) a pair nested near the earlier burned nest. 4 eggs were laid in the pit covered only by some stalks of the dry weeds. [Ukrainian].