Vlaschenko Anton, Gukasova Alona (2011):
Observation of daylight migration of Nyctalus noctula in NE Ukraine (Chiroptera: Vespertilionidae) [Наблюдение дневной миграции вечерниц (Nyctalus noctula) в СВ Украине (Chiroptera: Vespertilionidae)]:
Lynx, nová série, 42: 275–276.

Abstract

Daylight migration of several groups of noctule bats (Nyctalus noctula) was observed in the Kharkov region, Ukraine, in September 2010. The bats were foraging above steppe slopes and were moving from the north-east to the south-west. It is the first evidence of such unusual behavior of bats in NE Ukraine.