Rare bird species captured in net traps at the Varlam Island station, Pasvik Nature Reserve

The paper presents data on the capture of 19 rare bird species in net traps at the Varlam Island station of the Pasvik State Nature Reserve (Murmansk Oblast), from 2018 to 2024. The recorded birds include species that are accidental, breed irregularly, or are sporadically distributed within this protected area. Observed trends in the abundance of certain species — both declining and increasing — support the hypothesis of southern species migrating to northern latitudes. These findings contribute to the updated understanding of the habitat status of several species within the reserve. The presented data are valuable for environmental conservation efforts and may assist in the preparation and revision of the Red Data Book of the Murmansk Oblast.