St. Louis, Missouri – A recent discovery of a dead wood duck infected with bird flu near the Saint Louis Zoo has prompted significant changes within the facility. The duck tested positive for Avian Influenza, leading to the closure of multiple animal exhibits as a precautionary measure to protect the resident animals.
According to zoo officials, while the presence of the virus in migratory birds like ducks is not uncommon, the staff immediately implemented heightened biosecurity protocols to ensure the safety of all animals in the Zoo. As a result of these precautions, certain areas within the Zoo, such as the Cypress Swamp, Bird House, and Penguin & Puffin Coast, have been closed to visitors indefinitely.
In response to the situation, the Zoo has also halted its Behind-The-Scenes Tours for the duration of the migratory bird season. Despite these closures and changes, officials reassured the public that none of the animals under the zoo’s care have shown any signs of the virus.
The impact of bird flu extends beyond the Zoo, with millions of birds, including poultry, being affected across the country. Missouri has been one of the states hit hardest by the virus in 2025, accounting for a significant percentage of the nation’s chicken deaths. The U.S. Department of Agriculture’s Egg Markets Overview reported that Missouri ranks third in chicken deaths, behind only Indiana and Ohio.
In a statement, the Zoo emphasized their commitment to the well-being of the animals and their collaboration with various agencies, including the State Veterinarian, the United States Department of Agriculture, and the Missouri Department of Conservation. They stand prepared to take further action if necessary to ensure the safety and health of the animals in their care.