White Stork Day (Dzień Bociana Białego) is observed in Poland every May 31, celebrating the white stork, a bird associated with spring, the countryside, childhood, and happiness in Polish culture. Established by the Polish Society for Nature Conservation “pro Natura” in 2003, the holiday aims to educate the public about the ecological significance of white storks and the need for their protection. Poland is home to over 50,000 breeding pairs of white storks, making it a stronghold for the species, with the village of Żywkowo noted for having more than 40 stork nests. The white stork, a large bird with predominantly white plumage and a long red bill, has faced population declines due to habitat loss and agricultural changes. The day highlights the cultural and ecological roles of these birds, which have historically been associated with positive familial connotations across various cultures.