The Natura 2000 Special Protection Area for Birds established in 2012 in central Poland, on the border of the Łódź and Mazovian Voivodeships. It covers an area of 3980.66 ha.
It includes small valleys of the Słudwia River and its left tributary Przysowa, located in the Kutno, Łowicz and Gostynin counties. A bird sanctuary has also been established in this area, designated in the IBA nomenclature as sanctuary no. 145, with an area of 3284 ha. The Przysowa Valley (apart from the estuary section to the Słudwia) is also part of the Przysowa Valley Protected Landscape Area. In the northern part of the sanctuary there is the "Szczawińskie Lake" reserve.