Avian influenza (AI) is a highly contagious and acute viral disease that mainly affects poultry species such as chickens and turkeys. Wild birds are considered to be the natural reservoir of the pathogen, which is why they play a central role in its spread. In particular, waterbirds and birds of prey can not only be carriers, but can also fall ill and die. To protect livestock, wild birds found dead or sick are tested for AI. The data provided here contains the results of these tests since January 2018 and helps to better monitor the spread of the disease and support preventive measures.