Historical Ringing Data of Birds with Polish Rings

Description

 The Polish Ringing Centre was founded in 1931 to coordinate birds ringing in Poland. It collects and exchanges information about birds with Polish rings and ringed birds recovered in Poland. As a member of the European Union for Bird Ringing (EURING) it cooperates with other national ringing centres. So far, over 5 million records of birds marked with Polish rings have been collected in Polish Ringing Centre database, however, another hundreds of thousands need to be digitalised. This dataset contains the ringing data of birds ringed with Polish rings between 1950-1955 and 1967-2011.