Poland’s southern city of Krakow has launched a pilot program to curb its booming pigeon population with contraceptive-laced corn kernels. The initiative, which aims to reduce the number of new pigeons without harming the birds or the historic city, has seen special “smart feeders” appear in the city’s busiest pigeon hangouts, including the iconic Main Market Square. Each dispenser dishes out a daily ration of corn treated with a safe, vet-approved contraceptive that prevents the birds from reproducing while leaving them otherwise healthy. Posting online, city officials said: “The solution is safe for humans and other animals, and its goal is to improve the birds' condition and reduce problems associated with overpopulation, such as the spread of disease and difficulty accessing food. “The city hopes the program will lead to cleaner public spaces, safer sidewalks, and a reduced impact on historic architecture, while allowing locals and tourists to enjoy outdoor areas without interference from large pigeon flocks.” The innovative approach allows two ways to deliver the birth control. Pigeons can receive the treated corn directly from feeders, or the method can be applied intranasally — a minimally invasive approach that ensures the drug acts where it’s needed most. City officials say that the contraceptive only affects reproduction and does not harm the birds’ health or behavior. Residents have mixed reactions with some raise questions about potential effects on other wildlife. But Officials say careful monitoring, precise dosing, and lessons from other cities keep risks minimal. The program is a joint effort between Kraków city hall, the Dzikusy Salamandry Foundation, scientists, and animal welfare experts. It takes inspiration from Similar initiatives have already been introduced in other European cities, including Brussels, where contraceptive feeding helped shrink pigeon numbers without resorting to trapping or culling.
City officials say that the contraceptive only affects reproduction and does not harm the birds’ health or behavior. Photo: PAP/Łukasz Gągulski
