In recent decades, a reduction in the number of sparrows has been observed throughout their wide distribution range. However, information on and abundance Northeast Asia is scarce. Monospecific sparrow populations have identified various settlements towns Magadan Region, although there are occasional records other species. Among monospecific populations, only tree breed Tauy Bay coast, Magadan,...

Urban planning and management need long-term population level studies for evaluating how urbanization influences biodiversity. Firstly, we reviewed the current trends of House Sparrow (Passer domesticus) Eurasian Tree montanus) in Europe, evaluated usefulness citizens’ science projects to monitor these species Finland. Secondly, conducted a (1991–2020) winter field study 31 urban settlements al...