Some peculiarities of the behaviour of adult Red-backed Shrikes by the study of nestlings feeding by means of laying of the neck ligatures. - A.P. Shapoval, E.A. Shapoval. - Berkut. 4 (1-2). 1995. P. 97-98.
Research was carried out near the village of Lazorki of Poltava region in June and July 1991. Total 22 nests were under the observation. The ligatures out of aluminium stripes were laid usually for 2 hours (1-3). The food was collected each 30 minutes. Birds of some pairs had departures from the usual behaviour. A part of them decreased the frequency of nestlings feeding or quite stopped feeding and warming. Other birds active attacked the investigator. [Russian].
Key words: Red-backed Shrike, behaviour, nestling, feeding, method.