Abstract
Farmlands with small semi-natural habitat patches play an important role for the nesting and the non-breeding bird species. In this study, we analysed the annual number of bird species in the study area dominated by farmlands, the effect of weather variables on their number as well as the trend of some selected, locally non-breeding species. We used bird observation data from 1327 different days between 2013 and 2020. There were 163 common species found in each study year. 243 species observed over 8 years of the study were considered to be distinctly high compared to other regions of Hungary. A significant proportion of the species was associated with forests, while among rare species, we found species primarily associated with wetlands. The weather affected the number of the species only in March and July, which coincides with the beginning of the spring and autumn migration of shorebirds. The number of observations of non-locally nesting species typically did not change for mountainous and northern breeding species, while for some species the number of observations increased or decreased significantly. The results indicate the conservation value of secondary, anthropogenic habitat fragments.