The article describes the characteristic of the camouflage device for the camera trap, which was effectively used in the study of diurnal and seasonal mammals and birds in the central part of European Russia. In the masking used, the principle of mimicry is used. The masking device makes it possible to successfully use camera traps in any season of the year with the aim of studying animals or conducting tracking in hunting facilities. Daily activity of common fox Vulpes vulpes, badger Meles meles, Eagle Owl Bubo bubo, marmots Marmota bobak.
Andreychev A., Lapshin A. The effectiveness of using a masking device for a camera trap in studies of mammals and birds // Research Journal of Pharmaceutical, Biological and Chemical Sciences. 2018. 9(3). P. 1009–1016.

The article presents the characteristics of the ground daily and seasonal activity of the local steppe marmot populations scattered in the north of the area in central part of European Russia. Revealed the alternation of single-phase and two-phase loops terrestrial activity Marmota bobak during the spring-summer period. For April and June marked single-phase active and revealed a biphasic activity for May, July and August. On average, marmots come out of the holes in the morning 28 minutes after sunrise. They hide in burrows marmots in the evenings, on average 1 hour 16 minutes before sunset.
Andreychev A., Zhalilov А. Daily and seasonal activity patterns in steppe marmot (Marmota bobak, Sciuridae, Rodentia) in central part of European Russia // Research Journal of Pharmaceutical, Biological and Chemical Sciences. 2017. 8(2). P. 787–794.