Ranked as one of the best zoos in the nation exhibiting over 3,500 animals of 750 species. At the headwaters of the San Antonio River, the zoo encompasses 35 landscaped acres. Includes one of the largest bird collections in the world. The Zoo has a magnificent mini-zoo designed specifically for children under 5, Kronkosky's Tiny Tot Nature Spot. Open 365 days a year. Hours: 9 a.m.- 5 p.m. from Labor Day to Memorial Day; 9 a.m.- 6 p.m., Memorial Day to Labor Day. Admission: adults $9; seniors (62+) and children (3-11) $7; military $8; under 2 free. Group rates available.