Home – Home – Jornals – Contemporary Problems of Ecology 2023 number 3

Changes in the timing of bird migration can be tracked if there is data on the timing of bird migration collected from the same methodology. The bird ringing is a source of such data. Combination of two methods of registration migratory birds - observation and catch - provide more accurate data about first meeting of migratory species in the study area. The article deals with three parameters of spring migration: the first registration, the median of span and the last registration of the species (average values for 2015-2018) for 48 species of migratory birds according to capture and observation data around Baikal Bird Ringing Station (the south-east coast of lake Baikal). Comparison of the timing of the beginning of spring migration of 17 bird species in some areas of Baikal (Irkutsk region, southeastern and northeastern coasts of Baikal) showed that 13 species of birds arrive on the southeastern coast of Baikal 2-20 days earlier. Determined that changes in date of the first record are insignificant for 13 species of birds (±3 days). These species are most perspective for long-term monitoring of climate and population changes.