City Nature Challenge San Antonio Metro Area is part of a worldwide community science effort that invites people to observe, document, and help identify the plants and wildlife living in cities. Using the free iNaturalist app, participants across the San Antonio Metro Area — a 12-county region — contribute observations and identifications that become part of a global dataset supporting science and conservation.
Explore your backyard, neighborhood, local parks, or other natural areas between April 24–27, 2026. Look for wild plants, animals, fungi, or signs of life—such as tracks, feathers, or sounds—found in and around San Antonio or one of our participating counties. Take a photo of what you find—or record its sound—to help with identification. Upload your observations to iNaturalist so they count toward the City Nature Challenge. Not sure what it is? That’s okay—others can help identify it. (Don’t have an account? Creating one is free.)
The more observations you share, the more you contribute to documenting biodiversity across the San Antonio Metro Area.
Participating counties: Atascosa, Bandera, Bexar, Comal, Gillespie, Goliad, Guadalupe, Karnes, Kendall, Kerr, Medina, Wilson. Join us April 24–27, 2026, for four days of exploring nature, learning together, and contributing to a global community science event—right here at home.