• Area


    From an avian migrants perspective the station is in a large low altitude basin (Carpathian Basin) surrounded by various mountain ranges that may act as geographical barriers. Of these, presumably the most important is the Carpathians as it encompasses the region from northwest to southeast.

    On a smaller spatial scale the station is situated in central Hungary on the edge of a wetland that constitutes a part of the the Duna-Ipoly National Park. This protected area represents the only natural type habitat in the larger vicinity; practically the site is surrounded by arable fields, poplar plantations with several interspersed open-pit gravel mines.


    The area is covered by a mosaic of different types of hydrophil vegetation on the periphery of peat bogs, prior to our ringing activities there was intensive peat extraction from the surrounding bogs. The fauna and flora are characterized by some postglacial relict species. However, the peat mining pits were colonised by plants (mainly reed and swamp sawgrass Cladium mariscus), thus all open water surface disappeared. To reverse this process, the pits were dredged in late 2011 and a small channel system was made to maintain continuous water supply.


    Ócsa is situated in a humid continental transitional climate zone. Summers are medium warm and dry here, with relatively cold winters. The annual average temperature is 10.1 ºC (minimum cca -15.5 ºC, maximum cca 34.0 ºC). These values are somewhat lower than those of neighboring areas likely due to the cooling effects of the local peat bog and some open water surfaces. Annual precipitation is around 550-580 mm coming together with a ca. 2000 hours of sunshine. The direction of wind is often NW, the average wind speed is 2.5-3 m/s. The mean elevation is 100 m above sea level.